Q105 / 120 · NEET 2012 (Mains) · Zoology

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

  • A
    Deletion and insertion of base pairs cause frame-shift mutations
  • B
    Cancer cells commonly show chromosomal aberrations
  • C
    UV and gamma rays are mutagens
  • Correct answer
    D
    Change in a single base pair of DNA does not cause mutaiton

Solution

Change in single base pair of DNA cause mutation as if it mutated to termination codon or other amino acid codon specific. Cancer is the uncontrolled process of cell division. The causal agents are certain chemicals, radiation, viruses that behave as mutagen by acting at DNA. It is believed that cancer is a genetic disease caused by multiple mutation within the DNA.

Hence, the correct answer is option: 'D'.

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