Gene flow is restricted for geographic isolates because of some extrinsic barrier.

Question

Quizplus · Accepted Answer

Gene flow, the movement of genetic material from one population to another, is restricted for geographic isolates because of the physical barrier that prevents or limits the migration of individuals between populations. This extrinsic barrier could be a mountain range, an ocean, a desert, or any other geographic feature that makes it difficult for individuals to move from one area to another. Therefore, genetic differences can accumulate between geographically isolated populations, leading to speciation over time.

Gene Flow Is Restricted for Geographic Isolates Because of Some