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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
Mutations are usually induced by:
  • ✓
    Gamma rays
  • B
    Alpha rays
  • C
    Beta rays
  • D
    Visible light
✓

Answer

Correct option: A.
Gamma rays

Mutations are usually induced by gamma rays. If a gamma ray hits a $\text{DNA}$ strand, then it breaks the double strands of $\text{DNA}$ Normally, $\text{DNA}$ can repair most radiation damage, but If there is a lot of damage, then the cell will not be able to divide properly and will die. Alpha, beta, and visible light can not induce mutations.

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