According to the neutral theory of molecular evolution,
A) most alleles found in natural populations are neutral.
B) nearly all mutations have some effect on the organism.
C) the rate of fixation of neutral mutations is much faster in small populations than it is in large ones.
D) molecular clocks do not work.
E) most mutations must be neutral.

Question

Quizplus · Accepted Answer

The neutral theory of molecular evolution proposes that most of the genetic variation observed in populations is due to the accumulation of neutral mutations, which do not affect the fitness of the organism. Therefore, choice A is the best answer.

According to the Neutral Theory of Molecular Evolution