The graphs above show approximations of the expected frequency distribution of t

Question

The graphs above show approximations of the expected frequency distribution of the effects of spontaneous mutations. On the x-axis, minus sign means mutations are deleterious, 0 means there is no effect on fitness, and + means that mutations improve fitness (they are advantageous). Fitness effects further from zero are increasingly deleterious or advantageous, respectively. Choose the frequency distribution that best represents what you would see in a natural population (for any species, including humans). * A B C D Fitness Effect Fit Effect tness Effect Fit Effect ness ness

Explanation / Answer

C. Because most mutations are harmful or don't affect anything on fitness than being beneficial.

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