Which of the following correctly shows a possible order of events resulting in allopatric speciation?
A) postzygotic reproductive isolation - geographic isolation - natural selection
B) geographic isolation - prezygotic reproductive isolation - genetic drift
C) geographic isolation - natural selection - prezygotic reproductive isolation
D) natural selection - postzygotic reproductive isolation - geographic isolation
E) natural selection - prezygotic reproductive isolation - postzygotic reproductive isolation In allopatric speciation, two populations of the same species are separated geographically, preventing them from interbreeding with each other. Over time, the species gradually change, and prezygotic and postzygotic isolating mechanisms develop, preventing the two populations from reproducing if the populations ever come into contact again.

Question

Quizplus · Accepted Answer

In allopatric speciation, geographic isolation occurs first, followed by natural selection which leads to adaptations in the isolated populations. Over time, prezygotic reproductive isolation mechanisms can develop, preventing interbreeding if the populations come into contact again.

Which of the Following Correctly Shows a Possible Order of Events