Which of the following statements about mutation is correct?
A) The rate at which mutations occur in populations is constant.
B) Mutation does not contribute to the variability of a gene pool.
C) All mutations are harmful.
D) All mutations are caused by environmental factors external to the body,such as chemicals in food or X rays.
E) The only mutations of evolutionary significance are those which occur in sex cells.
Correct Answer:
Verified
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