Railways General Science & Technology Genetics Sample Paper

done Genetics and Evolution Sample Test Paper-30 Total Questions - 20    [Download]

• question_answer1)
  There was no free oxygen in the early atmosphere because most of it was tied up in
  A)
   Water
  done clear
  B)
          ammonia
  done clear
  C)
   Methane          
  done clear
  D)
   rock
  done clear
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• question_answer2)
  DNA is found primarily
  A)
   In cell nucleus
  done clear
  B)
   Outside the cell nucleus
  done clear
  C)
   In cell cytoplasm
  done clear
  D)
   None of these
  done clear
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• question_answer3)
  The branch of botany dealing with heredity and variation is called
  A)
   Geobotany       
  done clear
  B)
   Sericulture
  done clear
  C)
   Genetics          
  done clear
  D)
   Evolution
  done clear
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• question_answer4)
  Inheritance of ABO blood grouping is an example of
  A)
   Dominance
  done clear
  B)
   Co-dominance
  done clear
  C)
   Incomplete dominance
  done clear
  D)
   Both [a] and [b]
  done clear
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• question_answer5)
  Which one of the following features is closely related with the evolution of humans?
  A)
   Loss of tail       
  done clear
  B)
   Shortening of jaws
  done clear
  C)
   Binocular vision
  done clear
  D)
   Flat nails
  done clear
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• question_answer6)
  Study of fossils is called
  A)
   Geology           
  done clear
  B)
   Microbiology
  done clear
  C)
   Palaeontology
  done clear
  D)
   Biology
  done clear
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• question_answer7)
  Who proved that DNA is basic genetic material?
  A)
   Griffith
  done clear
  B)
   Watson
  done clear
  C)
   Boveri and Sutton
  done clear
  D)
   Hershey and Chase
  done clear
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• question_answer8)
  Which of the following features do humans lack that other primates have?
  A)
   Forward-facing eyes
  done clear
  B)
   Short snouts
  done clear
  C)
   Flexible shoulder and elbow joints
  done clear
  D)
   Opposable big toes
  done clear
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• question_answer9)
  What was the most significant trend in evolution of modem man (Homo sapiens) from his ancestors?
  A)
   Upright posture
  done clear
  B)
   Shortening of jaws
  done clear
  C)
   Binocular vision
  done clear
  D)
   Increasing brain capacity
  done clear
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• question_answer10)
  The remains of dead animals or plants that lived in the remote past are called
  A)
   Homologous organs
  done clear
  B)
   Analogous organs
  done clear
  C)
   Vestigial organs
  done clear
  D)
          Fossils
  done clear
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• question_answer11)
  Which of the following is a Test cross?
  A)
   TT\[\times \]tt   
  done clear
  B)
   Tt\[\times \]tt
  done clear
  C)
   Tt\[\times \]TT  
  done clear
  D)
   tt\[\times \]tt
  done clear
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• question_answer12)
  The book "Origin of species" was written by
  A)
   Lamarck          
  done clear
  B)
   Darwin
  done clear
  C)
   Mendel
  done clear
  D)
   De Vries
  done clear
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• question_answer13)
  The theory of evolution of species by natural selection was given by
  A)
   Mendel
  done clear
  B)
   Darwin
  done clear
  C)
   Morgan
  done clear
  D)
   Lamarck
  done clear
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• question_answer14)
  Which is the example of homologous organs?
  A)
   Forelimbs of man and Wings of bird
  done clear
  B)
   Wings of birds and Wings of insects
  done clear
  C)
   Vermiform appendix and Nictitating membrane
  done clear
  D)
   Archaeopteryx and Balanoglossus
  done clear
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• question_answer15)
  A zygote which has an X-chromosome inherited from the father will develop into a
  A)
   boy
  done clear
  B)
   Girl
  done clear
  C)
   X-chromosome does not determine the sex of a child
  done clear
  D)
   Either boy or girl
  done clear
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• question_answer16)
  In animals sex determination is due to
  A)
   X-chromosome
  done clear
  B)
   Y-chromosome
  done clear
  C)
   A-chromosome
  done clear
  D)
          B-chromosome
  done clear
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• question_answer17)
  Evolution of Man is believed to have taken place in
  A)
   Central America
  done clear
  B)
   Australia
  done clear
  C)
   Asia                
  done clear
  D)
   Africa
  done clear
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• question_answer18)
  Sudden inheritable change is called
  A)
   Recombination
  done clear
  B)
          Mutation
  done clear
  C)
   National selection
  done clear
  D)
   Segregation
  done clear
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• question_answer19)
  Mutation rates are affected by
  A)
   Temperature
  done clear
  B)
   X-rays
  done clear
  C)
   Gamma and beta radiation
  done clear
  D)
   All of the above
  done clear
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• question_answer20)
  From heredity point of view which marriage is not suitable"
  A)
   Man Rh \[\left( - \right)\] and Woman Rh (+)
  done clear
  B)
   Both Rh (+)
  done clear
  C)
   Both Rh \[\left( - \right)\]
  done clear
  D)
   Man Rh (+) and Woman Rh \[\left( - \right)\]
  done clear
  View Answer play_arrow