Question

question 3 of 10 when a population is split into smaller groups, why do these groups develop different traits? a. forces like natural selection and genetic drift affect the genes of the two subgroups differently. b. gene flow is increased in the two subgroups that are formed. c. separating the two groups decreases the chance that the two groups will diverge. d. traits that form in one group from evolutionary forces quickly spread through both populations.

Explanation:

When a population is split, natural selection and genetic drift can act differently on each subgroup. Natural selection favors traits beneficial to a particular environment, and genetic drift causes random changes in gene frequencies. These factors lead to different trait development. Gene - flow would homogenize the groups, separating them increases divergence, and traits don't quickly spread between separated groups.

Answer:

A. Forces like natural selection and genetic drift affect the genes of the two subgroups differently.