NEET Biology Principle Of Inheritance And Variation Question Bank

done Assertion and Reason Total Questions - 81

• question_answer1)
  Assertion : The uptake of DNA during transformation is an active, energy requiring process. Reason : Transformation occurs in only those bacteria, which possess the enzymatic machinery involved in the active uptake and recombination.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer2)
  Assertion : Genetic code is universal. Reason : Genetic code is same for all organisms.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer3)
  Assertion : Central dogma is the flow of information from DNA to mRNA and then decoding the information present in mRNA in the form of protein. Reason : In retroviruses, reverse of central dogma occurs.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer4)
  Assertion : Cytoplasmic inheritance occurs only due to plasmagenes. Reason : Plasmagenes are restricted to only two cell organelles i.e., mitochondria and chloroplast.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer5)
  Assertion : Regulator and operator genes are not associated with constitutive genes. Reason : Constitutive genes need not be repressed.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer6)
  Assertion : Crossing over occurs in all four chromatids of homologous chromosome. Reason : One homologous chromosome is called maternal and other paternal.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer7)
  Assertion : Mustard gas acts as a mutagen. Reason : It transfers alkyl groups to the bases in DNA.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer8)
  Assertion : Initiation step of protein synthesis in prokaryotes and eukaryotes has several differences. Reason : They both form mRNA - tRNA complex with smaller subunit of ribosome.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer9)
  Assertion : Sequences of bases in one polynucleotide chain of DNA can determine the sequence of bases in the other chain Reason : A = T and C - G.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer10)
  Assertion : The principle of segregation given by Mendel is the principle of purity A of gametes. Reason : Gametes are pure for a character. 
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer11)
  Assertion : Complementary genes are nonallelic B genes. Reason : Complementary genes interact to produce a completely new traits.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer12)
  Assertion : Test cross is a back cross. Reason : In test cross, individual A is crossed with recessive parent.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer13)
  Assertion : Mendel was successful in his hybridization experiments. Reason : Garden pea proved ideal experimental material.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer14)
  Assertion : Mutations are discontinuous variations. Reason : Mutations occur suddenly.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer15)
  Assertion : Every somatic cell and tissue of the body produces gemmule. Reason : Gemmules unite in gametes.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer16)
  Assertion : In a monohybrid cross, generation indicate dominant characters. Reason : Dominance occurs only in heterozygous state.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer17)
  Assertion : Hybrids are generally back crossed. Reason : Back cross is done to increase the traits of the parent.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer18)
  Assertion : A gene may have several allelomorphs. Reason : Wild form can mutate in more than one ways.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer19)
  Assertion : Avery et al. found that DNA is the molecular basis of heredity. Reason : Transformation is caused by DNA.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer20)
  Assertion : Adenine and guanine are doublering  bases. Reason : Adenine and guanine are pyrimidines.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer21)
  Assertion : The nitrogen bases of the two chains of DNA are held together by hydrogen bonds. Reason : Both chains of DNA are antiparallel.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer22)
  Assertion : One of the two strands of DNA is called sense strand and other is called antisense strand. Reason : Sense strand of DNA forms complementary RNA.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer23)
  Assertion : Z-DNA follows a zig-zag course. Reason : Z-DNA is left handed.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer24)
  Assertion : DNA polymerase-I acts as proofreader. Reason : DNA polymerase-I removes mismatched nucleotides.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer25)
  Assertion : One gene is required for one enzyme. Reason : Genes express themselves through synthesis of enzymes.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer26)
  Assertion : The concept of one gene-one enzyme was changed to one gene-one polypeptide. Reason : Each enzyme may consist of two or more different polypeptide.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer27)
  Assertion : rRNA is the most abundant RNA. Reason : rRNA is a constituent of ribosomes.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer28)
  Assertion : An mRNA has both initiation codon and termination codon. Reason : It specifies only a single polypeptide or number of them.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer29)
  Assertion : Genetic RNA acts as a hereditary material. Reason : Genetic RNA replicates directly.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer30)
  Assertion : The genetic codes are commaless. Reason : Genetic codes are overlapping.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer31)
  Assertion : During protein synthesis, ribosomes form polysomes. Reason : Different ribosomes of a polysome utilize a single strand of mRNA.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer32)
  Assertion : Ribosomes protect mRNA from ribonuclease. Reason : mRNA is located in the gap between the two ribosomal subunits.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer33)
  Assertion : In prokaryotes, there are three initiation factors used for protein synthesis. Reason : All the initiation factors have their own functions.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer34)
  Assertion : UAA, UAG and UGA terminate protein synthesis. Reason : They are not recognised by tRNA.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer35)
  Assertion : Typical chromosomes occur only in eukaryotes. Reason : Prokaryotes contain prochromosome.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer36)
  Assertion : The bacterial chromosome is called nucleoid. Reason : Nucleus is absent, but chromosomes are similar to eukaryotes.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer37)
  Assertion : DNA found in mitochondria and chloroplast are called prochromosome. Reason : They are similar to prokaryotic chromosome.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer38)
  Assertion : Allosomes determine sex of individual. Reason : Androsomes are responsible for female sex.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer39)
  Assertion : The shape of chromosomes is based on the position of centromere. Reason : During anaphase, the chromosome bends in the region of centromere.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer40)
  Assertion : Heterochromatin is genetically inactive. Reason : It lacks genes.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer41)
  Assertion : Scaffold proteins are nonhistone chromosomal proteins. Reason : They are rich in lysine and arginine.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer42)
  Assertion : Kinetochore helps in the movement of chromosomes. Reason : It has points for attachment of microtubules.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer43)
  Assertion : Polytene chromosomes are also called salivary chromosomes. Reason : They are present only in salivary glands of insects.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer44)
  Assertion : The lampbrush chromosomes are called diplotene chromosomes bivalents. Reason : The number of loops is maximum during diplotene.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer45)
  Assertion : In birds, the chromosome composition of the egg determines the sex. Reason : Female birds are heterogametic.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer46)
  Assertion : Human chromosomes have been studied through banding technique. Reason : Banding technique is useful in studying chromosomal aberrations.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer47)
  Assertion : Most of experiments regarding sex determination were done on Drosophila. Reason : It is a fruit fly.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer48)
  Assertion : The strength of linkage will be more when the distance between two genes is greater. Reason : Crossing over will be relatively less frequent.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer49)
  Assertion : In humans, most sex-linked genes are present on the X chromosome. Reason : X-chromosome contains a large number of genes with major effects on phenotype.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer50)
  Assertion : Males suffer from sex-linked disorders more often than females. Reason : Traits governed by sex-linked recessive genes.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer51)
  Assertion : Crossing over is exchange of parts of chromosomes. Reason : It occurs prior to duplication of chromosomes.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer52)
  Assertion : Genomatic mutations arise due to change in ploidy. Reason : Genomic mutations are changes in the arrangement of genes.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer53)
  Assertion : Polyploidy in plant is common. Reason : Animals composed entirely of polyploid cells are rare.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer54)
  Assertion : Allopolyploidy is developed between hybridisation of two species. Reason : Amphidiploids are also allopolyploids.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer55)
  Assertion : Wheat is an example of segmental allopolyploidy. Reason : The three diploid genomes are related.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer56)
  Assertion : In case of deficiency, recessive allele may show pseudodominance. Reason : It occurs generally in absence of its dominant allele.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer57)
  Assertion : Translocations may not involve a loss or an addition of chromosome. Reason : During translocation a part of a chromosome becomes detached and joins a part of a nonhomologous chromosome.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer58)
  Assertion : Spontaneous mutations occur without any mutagenic agent. Reason : Induced mutations are caused by mutagenic agents.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer59)
  Assertion : Inversion and substitution are examples of point mutation. Reason : Point mutations involve a change in a single nucleotide.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer60)
  Assertion : Sharbati Sonora was developed from Mexican wheat variety. Reason : It became possible by hybridization process.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer61)
  Assertion : Killer strain of Paramecium aurelia can kill sensitive strain. Reason : If sensitive strain is provided kappa particle, it becomes killer.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer62)
  Assertion : Haploids are used to study mutation. Reason : Most of the mutations are recessive.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer63)
  Assertion : The bacteria and other prokaryotes show high adaptability to the changing environment. Reason : Member of kingdom Monera are efficient in regulating gene expression.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer64)
  Assertion : Repression occurs at transcription level. Reason : When repressor binds to the operator, transcription occurs.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer65)
  Assertion : Haemophilia never occurs in women. Reason : Gene for haemophilia is located on X chromosome. [AIIMS 1994, 96]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer66)
  Assertion : Holandric genes are found on Y chromosome. Reason : Inheritance of Holandric genes are always from father to son. [AIIMS 1996]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer67)
  Assertion : Plasmids are single stranded extra chromosomal DNA. Reason : Plasmids are found in Eukaryotic cells. [AIIMS 1997, 2002]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer68)
  Assertion : The genetic complement of an organism is called genotype. Reason : Genotype is the type of hereditary properties of an organism. [AIIMS 1999]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer69)
  Assertion : Phenylketonuria is a recessive hereditary disease caused by body?s failure to oxidise an amino acid phendylanine to tryrosine, because of a defective enzyme. Reason : It results the presence of phenylalanine acid in urine. [AIIMS 2000]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer70)
  Assertion : Plasmids are extrachromosomal DNA. Reason : Plasmids are found in bacteria and are useful in genetic engineering. [AIIMS 2001]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer71)
  Assertion : Clones are produced by sexual reproduction and same sexual process. Reason : These are prepared by group of cells descended from many cells or by inbreeding of a heterozygous line. [AIIMS 2002]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer72)
  Assertion : The tRNA molecules possess anticodons. Reason : It needs the message in form of codon. [AIIMS 1995]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer73)
  Assertion : If pollen mother cells has 42 chromosomes. The pollen has only 21 chromosomes. Reason : Pollens are formed after meiosis in pollen mother cell. [AIIMS 1997]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer74)
  Assertion : Histones are basic proteins of major importance in packaging of eukaryotic DNA, DNA and histones comprise chromatin forming the bulk of eukaryotic chromosome. Reason : Histones are five major types \[{{H}_{1}},{{H}_{2}}A,{{H}_{2}}B,{{H}_{3}}\] and \[{{H}_{4}}\] [AIIMS 2000]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer75)
  Assertion : mRNA attaches to ribosome through its 3' end. Reason : The mRNA has F-capsular nucleotide and bases of lagging sequence. [AIIMS 2002]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer76)
  Assertion : Among the primates, chimpanzee is the closest relative of the present day humans. Reason : The banding pattern in the autosome numbers 3 and 6 of man and chimpanzee is remarkably similar. [AIIMS 2004]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer77)
  Assertion : Persons suffering from haemophilia fail to produce blood clotting factor VIII. Reason : Prothrombin producing platelets in such persons are found in very low concentration.  [AIIMS 2005]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer78)
  Assertion : In humans, the gamete contributed by the male determines whether the child produced will be male or female. Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on X-chromosome and some on Y-chromosome. [AIIMS 2005]
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer79)
  Assertion : Replication and transcription occur in the nucleus but translating occurs in the cytoplasm. [AIIMS 2005] Reason : mRNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer80)
  Assertion : In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote).  [AIIMS 2005] Reason : Both bacteria and yeast multiply very fast to form huge population which express the desired gene.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow

• question_answer81)
  Assertion : Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops. [AIIMS 2005] Reason : A gene incorporated in the bacterial chromosomal genome gets automatically transferred to the crop with which the bacterium is associated.
  A)
  If both the assertion and the reason are true and the reason is a correct explanation of the assertion done clear
  B)
  If both the assertion and reason are true but the reason is not a correct explanation of the assertion  done clear
  C)
  If the assertion is true but the reason is false done clear
  D)
  If both the assertion and reason are false done clear
  E)
  If the assertion is false but reason is true done clear
  View Solution play_arrow