Mutations can either have no effect, be harmful or be beneficial. It depends on the specific mutation and how it affects the organism's traits and fitness. It is not always the case that mutations are detrimental or beneficial, and they are not the only factor that contributes to changes in allele frequencies in populations.

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Mutations

Question 21

Multiple Choice

Mutations:

A) are always detrimental.
B) account for most of the change in allele frequency in a population.
C) may do nothing, may be harmful, or may be beneficial.
D) are always beneficial.

Correct Answer: