in-a-hypothetical-scenario-two-populations-of-birds-are-separated-by-a-mountain-

Question

In a hypothetical scenario, two populations of birds are separated by a mountain range. How might prezygotic barriers contribute to preventing gene flow between these populations?

Accepted Answer

By causing behavioral differences that prevent mating attempts between populations

Answer

By increasing the mutation rate in one of the populations

Answer

By altering the physical environment to create a physical barrier

Answer

By resulting in offspring that are sterile and unable to reproduce