In hybrid zones where reinforcement is occurring, we should see a decline in ________.
A) gene flow between distinct gene pools
B) speciation
C) the genetic distinctness of two gene pools
D) mutation rates

Question

Quizplus · Accepted Answer

Reinforcement involves selection against hybrids, which can result in reduced gene flow between the two distinct gene pools. This is because hybrids may have reduced fitness compared to their parental species, and so selection will favor individuals that do not mate with the other species. Thus, we should expect to see a decline in gene flow between the two gene pools in areas where reinforcement is occurring. The other choices are not necessarily related to reinforcement or hybrid zones.

In Hybrid Zones Where Reinforcement Is Occurring, We Should See