NEET Biology Principle Of Inheritance And Variation Question Bank

done Sex Determination Total Questions - 46

• question_answer1)
  Free Martin condition is found in
  A)
  Man done clear
  B)
  Sheep, goat etc. done clear
  C)
  Rabbit done clear
  D)
  Frog done clear
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• question_answer2)
  A female with XXXX chromosome will have the following number of Barr bodies
  A)
  One done clear
  B)
  Two done clear
  C)
  Three done clear
  D)
  Four done clear
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• question_answer3)
  Barr bodies (seen in saliva test in Olympic games) are found in human and are associated with [BHU 1970, 99, 2002; CBSE PMT 1992; MP PMT 1997, 98; KCET  1998]
  A)
  Male autosome done clear
  B)
  Female autosome done clear
  C)
  Female sex chromosome done clear
  D)
  Male sex chromosome done clear
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• question_answer4)
  The chromosomes responsible for the determination of sex are called [CPMT 1992]
  A)
  Autosomes done clear
  B)
  Allosomes done clear
  C)
  Multiple alleles done clear
  D)
  Heterosis done clear
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• question_answer5)
  How many linkage groups are present in Drosophilla
  A)
  6 done clear
  B)
  4 done clear
  C)
  2 done clear
  D)
  8 done clear
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• question_answer6)
  Who put forward the "Theory of linkage''
  A)
  Sutton done clear
  B)
  Morgan done clear
  C)
  De Vries done clear
  D)
  Bateson and Punnet done clear
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• question_answer7)
  The barr body is observed in [Kerala CET 2005]
  A)
  Basophils of males done clear
  B)
  Neutrophils of females done clear
  C)
  Eosinophils done clear
  D)
  Neutrophils of males done clear
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• question_answer8)
  Mule is an offspring of [NCERT 1980]
  A)
  Male and female donkey done clear
  B)
  Cow and ox done clear
  C)
  Male ass and mare done clear
  D)
  Male horse and female ass done clear
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• question_answer9)
  The genotype of a boy having sexual characters of a girl is [DPMT 1985]
  A)
  XXX done clear
  B)
  XXY done clear
  C)
  XO done clear
  D)
  XYY done clear
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• question_answer10)
  The average ratio of male to female individuals based on XX and XY type of sex determination, in total world of human population is [CPMT 1979, 81]
  A)
  3 : 1 done clear
  B)
  1 : 3 done clear
  C)
  1 : 4 done clear
  D)
  1 : 1 done clear
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• question_answer11)
  The sex determination pattern in honeybee is called [MP PMT 1993; AIIMS 1993; MP PMT 2005]
  A)
  Female haploidy done clear
  B)
  Haplodiploidy done clear
  C)
  Gametic diploidy done clear
  D)
  Gametogony done clear
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• question_answer12)
  Sex of a human child is determined by [CPMT 1980; MP PMT 1993, 01, 03]
  A)
  Size of the egg at the time of fertilization done clear
  B)
  Size of the sperm at the time of fertilization done clear
  C)
  Sex chromosome of father done clear
  D)
  Sex chromosome of mother done clear
  View Solution play_arrow

• question_answer13)
  Lyon hypothesis deals with [DPMT 1993]
  A)
  Centromere position done clear
  B)
  Genetic compatibility done clear
  C)
  Genetic incompatibility done clear
  D)
  Number of Barr bodies done clear
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• question_answer14)
  Meta-females have [DPMT 1993]
  A)
  XX done clear
  B)
  XO done clear
  C)
  XXXX done clear
  D)
  XXXXXX done clear
  View Solution play_arrow

• question_answer15)
  Animal which remains male initially, then changes to female (Tapeworm proglottides) is called [CBSE PMT 1993]
  A)
  Protandrous done clear
  B)
  Apomixis done clear
  C)
  Profixation done clear
  D)
  None of these done clear
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• question_answer16)
  Barr bodies and drumsticks are of what significance to genetists and biologists [AFMC 1993]
  A)
  They indicate the presence of abnormal sex cells done clear
  B)
  They indicate the presence of more than one X chromosome in the cells done clear
  C)
  They indicate male calls done clear
  D)
  They signify the presence of sex linked traits done clear
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• question_answer17)
  Determination of sex of a child depends upon [CPMT 1980]
  A)
  Nature of sperm done clear
  B)
  Nature of egg done clear
  C)
  Health of father done clear
  D)
  Age of mother done clear
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• question_answer18)
  For determination of sex, body cells are taken from
  A)
  Buccal epithelium done clear
  B)
  Buccal epithelium and root of hair done clear
  C)
  Gonads done clear
  D)
  Root of hairs done clear
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• question_answer19)
  Chromosomal abnormality of an unborn baby (while in mother's womb) can be found out by a technique [NCERT 1983; MP PMT 1990, 95]
  A)
  Amniocentesis done clear
  B)
  CAT scanning done clear
  C)
  Ultrasound done clear
  D)
  Tissue culture done clear
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• question_answer20)
  In human beings, sex is determined [MP PMT 1990]
  A)
  Before fertilization of ovum done clear
  B)
  During 6th week of foetal life when androgens are produced done clear
  C)
  At the time of fertilization of ovum done clear
  D)
  During 7th and 8th weeks of foetal life when gonads differentiate into testis and ovary done clear
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• question_answer21)
  Foetal sex can be determined by examining cells from amniotic fluid looking for [BHU 1985; CBSE PMT 1991]
  A)
  Barr bodies done clear
  B)
  Chiasmata done clear
  C)
  Sex chromosomes done clear
  D)
  Kinetochores done clear
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• question_answer22)
  The sex in Drosophila melanogaster is determined by [MP PMT 1994]
  A)
  X chromosomes done clear
  B)
  X and Y chromosomes done clear
  C)
  Autosomes done clear
  D)
  X chromosomes and autosomes done clear
  View Solution play_arrow

• question_answer23)
  Male child will be born if [CPMT 1995]
  A)
  Father is sexually more excited done clear
  B)
  Sperm of male with Y chromosome fertilizes the egg done clear
  C)
  Sperm of male with X chromosome fertilizes the egg done clear
  D)
  None of the above done clear
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• question_answer24)
  Barr body in mammals represents [CBSE PMT 1995]
  A)
  All the heterochromatin in female cells done clear
  B)
  One of the two X chromosomes in somatic cells of females done clear
  C)
  All the heterochromatin in male and female cells done clear
  D)
  The Y chromosome in somatic cells of male done clear
  View Solution play_arrow

• question_answer25)
  In the buccal cavity slide cell of an individual we get a dark stained body near nuclear membrane. The genotype of the individual may be [DPMT 1983]
  A)
  XX done clear
  B)
  XY done clear
  C)
  XYY done clear
  D)
  XXX done clear
  View Solution play_arrow

• question_answer26)
  Drosophila flies with one half of the body male and other half female is referred to as [CBSE PMT 1994]
  A)
  Gynandromorph done clear
  B)
  Hermaphrodite done clear
  C)
  Super female done clear
  D)
  Intersex done clear
  View Solution play_arrow

• question_answer27)
  In human female, barr bodies are formed by [CBSE PMT 1996]
  A)
  Inactivation of mother's X chromosome done clear
  B)
  Inactivation of father's X chromosome done clear
  C)
  Inactivation of both mother's and fathers X chromosomes done clear
  D)
  Inactivation of either mother's or father's X chromosome done clear
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• question_answer28)
  Gynandromorphs develop in Drosophila when the two cells in the two-celled proembryo will have one of the following chromosomal sets [MP PMT 1997]
  A)
  2A + XX in one cell and 2A + X in the other done clear
  B)
  2A + X in both the cells done clear
  C)
  2A + XXX in both the cells done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer29)
  Genic balance theory of sex determination was proposed by [MP PMT 1997, 99, 2000; KCET 2004]
  A)
  Morgan done clear
  B)
  Bridges done clear
  C)
  Boveri done clear
  D)
  Wilkins done clear
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• question_answer30)
  There are five daughters and no son in a family. It may be due to [CPMT 1984]
  A)
  Father produced only X containing sperms done clear
  B)
  Father produced no sperms at all done clear
  C)
  Y type sperms are weaker and not effective done clear
  D)
  By chance each time X sperm fertilized the egg done clear
  View Solution play_arrow

• question_answer31)
  Loss of a X chromosome in a particular cell during its development, results into [CBSE PMT 1998]
  A)
  Diploid individual done clear
  B)
  Triploid individual done clear
  C)
  Gynandromorphs done clear
  D)
  (a) and (b) both done clear
  View Solution play_arrow

• question_answer32)
  Genetic identity of a human male is determined by [CBSE PMT 1997; Pb. PMT 1999;  KCET 2000; CPMT 2000]
  A)
  Autosome done clear
  B)
  Nucleolus done clear
  C)
  Sex chromosome done clear
  D)
  Cell organelles done clear
  View Solution play_arrow

• question_answer33)
  The theory where ratio between the number of X-chromosomes and number of complete sets of autosomes will determine the sex is known as  [MP PMT 2002]
  A)
  Chromosome theory of sex determination done clear
  B)
  Genic balance theory of sex determination done clear
  C)
  Hormonal balance theory of sex determination done clear
  D)
  Environmental sex determination theory done clear
  View Solution play_arrow

• question_answer34)
  If somatic cells of a human male contain single barrbody, the genetic composition of the person would be [JIPMER 1993; MP PMT 2001]
  A)
  XYY done clear
  B)
  XXY done clear
  C)
  XO done clear
  D)
  XXXY done clear
  View Solution play_arrow

• question_answer35)
  Chromosome theory of sex determination was propounded by   [MP PMT 2002; BVP 2002]
  A)
  Bridges done clear
  B)
  Balbiani done clear
  C)
  Goldschmidt done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer36)
  The sex chromosomes in females are [MP PMT 2002]
  A)
  XX done clear
  B)
  XY done clear
  C)
  YY done clear
  D)
  XXY done clear
  View Solution play_arrow

• question_answer37)
  Random genetic drift in a population probably results from    [CBSE PMT 2002; 03]
  A)
  Large population size done clear
  B)
  Highly genetically variable individuals done clear
  C)
  Interbreeding within small isolated population done clear
  D)
  Constant low mutation rate done clear
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• question_answer38)
  In melandrium the sex determination type is [Kerala CET  2003]
  A)
  XX-XY type done clear
  B)
  XX-XO type done clear
  C)
  ZZ-ZW type done clear
  D)
  XY-XO type done clear
  View Solution play_arrow

• question_answer39)
  A medical technician while observing a human blood smear under the microscope notes the presence of barrbody close to the nuclear membrane in the WBC. This indicates that person under investigation is [Kerala CET  2003]
  A)
  Colour blind done clear
  B)
  Haemophilic done clear
  C)
  Normal female done clear
  D)
  Normal male done clear
  View Solution play_arrow

• question_answer40)
  Sex determination in Drosophila melanogaster is based on   [MP PMT 1995; AIEEE 2004]
  A)
  X-Y­ chromosome mechanism done clear
  B)
  Genetic balance between the X-chromosome and autosomes done clear
  C)
  Chromosome - environment interaction done clear
  D)
  Pseudoalleles. done clear
  View Solution play_arrow

• question_answer41)
  Based on Lyon's hypothesis, what will be the number of Barr bodies found in a human female suffering from Down's syndrome  [AIEEE 2004]
  A)
  0 done clear
  B)
  1 done clear
  C)
  2 done clear
  D)
  3 done clear
  View Solution play_arrow

• question_answer42)
  Chromosomes that determine male sex in Melandrium plant is   [DPMT 2004]
  A)
  Y chromosome done clear
  B)
  X chromosome done clear
  C)
  XX chromosome done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer43)
  Barr bodies are [CBSE PMT 1993]
  A)
  Chromatin negative done clear
  B)
  Not influenced by stains done clear
  C)
  Chromatin positive done clear
  D)
  Poorly staining done clear
  View Solution play_arrow

• question_answer44)
  A family has five girls and no son. Probability of son as the 6th child will be [AFMC 1983, 84, 2000; CPMT 2005]
  A)
  50% done clear
  B)
  75% done clear
  C)
  Full done clear
  D)
  No chance done clear
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• question_answer45)
  The first plant in which chromosomal basis of sex determination was discovered is [BHU 1985, 88]
  A)
  Melandrium (Lychnis) done clear
  B)
  Rumex done clear
  C)
  Sphaerocarpus done clear
  D)
  Coccinia done clear
  View Solution play_arrow

• question_answer46)
  In Drosophila, the sex is determined by [CBSE PMT 2003]
  A)
  Whether the egg is fertilized or develops parthenogenetically done clear
  B)
  The ratio of number of X-chromosomes to the sets of autosomes done clear
  C)
  X and Y chromosomes done clear
  D)
  The ratio of pairs of X-chromosomes to the pairs of autosomes done clear
  View Solution play_arrow