The nearly neutral theory
A)relaxes assumptions concerning the selective neutrality of alleles.
B)can be used to explain the fact that substitution rate is approximately independent of generation time.
C)suggests that mildly deleterious mutations can become fixed more readily in smaller populations due to drift.
D)A and C
E)All of the above

Question

Quizplus · Accepted Answer

The nearly neutral theory incorporates the idea that not all mutations are strictly neutral or advantageous, but some are nearly neutral, especially in small populations where genetic drift can lead to the fixation of mildly deleterious mutations. It also explains the observation that substitution rates are roughly constant across species with different generation times.

The Nearly Neutral Theory