CET-BIOLOGY-JNK-2008 Questions and Answers

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Q51
Chromosomes are visible with chromatids at this phase of mitosis :
  • A Interphase
  • B Prophase
  • C Metaphase
  • D Anaphase
Answer: Option B
Q52
Inheritance of ABO blood grouping is an example of :
  • A Dominance
  • B Codominance
  • C Incomplete dominance
  • D All of these
Answer: Option B
Q53
In a dihybrid cross between RRYY and rryy parents, the number of RrYy genotypes in F2 generation will be :
  • A 4
  • B 3
  • C 2
  • D 1
Answer: Option A
Q54
Identify a 47, + 21 disorder from the following :
  • A Down’s syndrome
  • B Turner’s syndrome
  • C Phenylketonuria
  • D Klinefelter’s syndrome
Answer: Option A
Q55
Uracil is present in RNA at the place of :
  • A Adenine
  • B Guanine
  • C Cytosine
  • D Thymine
Answer: Option D
Q56
Copying genetic information from one strand of DNA into RNA is :
  • A Translation
  • B Transcription
  • C Transformation
  • D Transduction
Answer: Option B
Q57
S. L. Miller’s closed flask contained :
  • A CH4
  • B H2
  • C NH3 and Water vapour
  • D All of these
Answer: Option D
Q58
Change of frequency of alleles in a population results in evolution is proposed in :
  • A Darwin’s theory
  • B Lamarck’s theory
  • C Hardy-Weinberg principle
  • D De Vries theory
Answer: Option C
Q59
One of the following is the vestigial organ in human beings :
  • A Nictitating membrane
  • B Spleen
  • C Femur
  • D Tibia
Answer: Option A
Q60
The golden age of reptiles is :
  • A Cenozoic era
  • B Palaeozoic era
  • C Mesozoic era
  • D Silurian period
Answer: Option C

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