Which of the following statements about evolutionary forces is accurate?
A) Unlike the other evolutionary forces, gene flow is the only force that causes populations to become more different.
B) Unlike the other evolutionary forces, mutation is the only force that decreases genetic variability.
C) Unlike the other evolutionary forces, nonrandom mating is the only force that changes allele frequency.
D) Unlike the other evolutionary forces, natural selection is the only force that improves the match between the organism and its environment.

Question

Quizplus · Accepted Answer

Natural selection is unique among evolutionary forces in that it consistently works to improve the adaptation of organisms to their environment by favoring alleles that increase survival and reproductive success. Gene flow tends to homogenize populations, mutation increases genetic variability, and nonrandom mating affects the distribution of genotypes but does not directly change allele frequencies.

Which of the Following Statements About Evolutionary Forces Is Accurate