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MCQs

Total Questions : 195 | Page 20 of 20 pages
Question 191. Sickle cell anemia is which type of mutation?
  1.    nonsense mutation
  2.    missense mutation
  3.    deletion mutation
  4.    insertion mutation
 Discuss Question
Answer: Option B. -> missense mutation
Answer: (b).missense mutation
Question 192. In nonsense mutation, the new mRNA codon specifies the same amino acid as that from the original codon.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 193. The replacement of a purine by a pyrimidine or vice versa is known as ____________
  1.    tranversion
  2.    transition
  3.    base-pair substitution
  4.    missense mutation
 Discuss Question
Answer: Option A. -> tranversion
Answer: (a).tranversion
Question 194. Which of the following mutagen causes a break in the phosphodiester backbone of the nucleic acid?
  1.    UV light
  2.    X-rays
  3.    Nitrous acid
  4.    base analogs
 Discuss Question
Answer: Option B. -> X-rays
Answer: (b).X-rays
Question 195. Which of the following mutations result in frameshift mutation?
  1.    missense mutation
  2.    transition
  3.    transversion
  4.    insertion
 Discuss Question
Answer: Option D. -> insertion
Answer: (d).insertion

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