Mutation is the only evolutionary mechanism that ________.
A) is the ultimate source of variation in natural populations
B) does little to change allele frequencies
C) decreases fitness
D) is more important in eukaryotes than in prokaryotes
E) has no effect on genetic variation

Question

Quizplus · Accepted Answer

Mutation is the ultimate source of variation in natural populations. Other mechanisms, such as natural selection, genetic drift, and gene flow, operate on the variation created by mutation.

Mutation Is the Only Evolutionary Mechanism That ________