Question

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

• A. Deletion and insertion of base pairs cause frameshift mutations.
• B. Cancer cells commonly show chromosomal aberrations
• C. UV and gamma rays are mutagens
• D. Change in a single base pair of DNA does not cause mutation

Answer 1

The correct option is D Change in a single base pair of DNA does not cause mutation

Change in a single base pair of DNA cause mutation, i.e. point mutation.
Cancer is the uncontrolled process of cell division. The mutagenic agents are certain chemicals, radiation, viruses, etc., that behave as mutagen by acting on DNA. It is believed that risk of cancer can increase due to multiple mutations in the DNA.