Speciation occurs when members of two species are so genetically different that they can no longer interbreed and produce fertile offspring.

Question

Quizplus · Accepted Answer

This is a generally accepted definition of speciation. When two populations of a species become so genetically different that they can no longer interbreed and produce fertile offspring, they are considered separate species. This can occur through various mechanisms such as geographic isolation, reproductive isolation, or genetic drift.

Speciation Occurs When Members of Two Species Are So Genetically