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MCQs

Total Questions : 348 | Page 7 of 35 pages
Question 61. The translocated part of Philadelphia chromosome is found on chromosome ________
  1.    4
  2.    9
  3.    11
  4.    13
 Discuss Question
Answer: Option B. -> 9
Answer: (b).9
Question 62. When was the first correlation between a chromosomal deletion and human disorder first developed?
  1.    1963
  2.    1973
  3.    1983
  4.    1993
 Discuss Question
Answer: Option A. -> 1963
Answer: (a).1963
Question 63. Zygotes containing chromosomal deletion are produced by ___________
  1.    apoptosis
  2.    abnormal mitosis
  3.    abnormal meiosis
  4.    necrosis
 Discuss Question
Answer: Option C. -> abnormal meiosis
Answer: (c).abnormal meiosis
Question 64. Unlike the 23 pairs of chromosomes in human cells, chimpanzees have 24 pairs of chromosomes.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 65. Partial trisomy is the presence of _____ copies of a gene.
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 66. The capability of the repressor to bind the operator depends upon _____________
  1.    pH
  2.    conformation
  3.    temperature
  4.    moisture
 Discuss Question
Answer: Option B. -> conformation
Answer: (b).conformation
Question 67. The lac operon consists of ____ structural genes.
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 68. The lac operon is under positive control, a phenomenon called _________________
  1.    regulation
  2.    mutation
  3.    lactose-effect
  4.    glucose-effect
 Discuss Question
Answer: Option D. -> glucose-effect
Answer: (d).glucose-effect
Question 69. Which of the following acts as a co-repressor in tryptophan operon?
  1.    tryptophan
  2.    tyrosine
  3.    glucose
  4.    lactose
 Discuss Question
Answer: Option A. -> tryptophan
Answer: (a).tryptophan
Question 70. Which of the following acts as an inducer in the lac operon?
  1.    glucose
  2.    tryptophan
  3.    lactose
  4.    galactose
 Discuss Question
Answer: Option C. -> lactose
Answer: (c).lactose

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