Which of the following results in a spontaneous mutation?
A)free radicals produced by cellular metabolism
B)exposure to ultraviolet light
C)exposure to benzo (a)-pyrene,a chemical substance found in cigarette smoke
D)exposure to ultraviolet light and benzo (a)-pyrene
E)exposure to X-rays

Question

Quizplus · Accepted Answer

Free radicals produced by cellular metabolism can cause spontaneous mutations by damaging the DNA. The other options all involve exposure to exogenous mutagens that increase the likelihood of mutations, but they are not considered spontaneous mutations.

Which of the Following Results in a Spontaneous Mutation