AP BIOLOGY

Detailed explanation-1: -Reproductive isolation occurs when a population splits into two groups and the two populations no longer interbreed. When populations become reproductively isolated, they can evolve into two separate species.

Detailed explanation-2: -Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge. In allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation.

Detailed explanation-3: -Reproductive isolation may involve genetic incompatibilities between species that result in the sterility or inviability of hybrid offspring.