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Which one of the following is a wrong statement regarding mutations?

  1. A
    Change in a single base pair of DNA does not cause mutation
  2. B
    Deletion and insertion of base pairs cause frame-shift mutations
  3. C
    Cancer cells commonly show chromosomal aberrations
  4. D
    UV and Gamma rays are mutagens

Solution & Step-by-step Explanation

A change in a single base pair of DNA is known as a point mutation. A classic example is sickle-cell anemia, where a single base substitution in the beta-globin gene leads to a significant phenotypic change. Therefore, statement A is false.

Practice this question

Try it yourself before checking the explanation above.

Which one of the following is a wrong statement regarding mutations?
A
Change in a single base pair of DNA does not cause mutation
B
Deletion and insertion of base pairs cause frame-shift mutations
C
Cancer cells commonly show chromosomal aberrations
D
UV and Gamma rays are mutagens

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Principles of InheritanceMutation

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