CET-BIOLOGY-JNK-2008

CET-BIOLOGY-JNK-2008
51. Chromosomes are visible with chromatids at this phase of mitosis :
  • Interphase
  • Prophase
  • Metaphase
  • Anaphase
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52. Inheritance of ABO blood grouping is an example of :
  • Dominance
  • Codominance
  • Incomplete dominance
  • All of these
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53. In a dihybrid cross between RRYY and rryy parents, the number of RrYy genotypes in F2 generation will be :
  • 4
  • 3
  • 2
  • 1
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54. Identify a 47, + 21 disorder from the following :
  • Down’s syndrome
  • Turner’s syndrome
  • Phenylketonuria
  • Klinefelter’s syndrome
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55. Uracil is present in RNA at the place of :
  • Adenine
  • Guanine
  • Cytosine
  • Thymine
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56. Copying genetic information from one strand of DNA into RNA is :
  • Translation
  • Transcription
  • Transformation
  • Transduction
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57. S. L. Miller’s closed flask contained :
  • CH4
  • H2
  • NH3 and Water vapour
  • All of these
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58. Change of frequency of alleles in a population results in evolution is proposed in :
  • Darwin’s theory
  • Lamarck’s theory
  • Hardy-Weinberg principle
  • De Vries theory
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59. One of the following is the vestigial organ in human beings :
  • Nictitating membrane
  • Spleen
  • Femur
  • Tibia
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60. The golden age of reptiles is :
  • Cenozoic era
  • Palaeozoic era
  • Mesozoic era
  • Silurian period
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