Why is it likely that MOST speciation is allopatric?
A)Because gene flow between diverging populations is strong in allopatry.
B)Because gene flow between populations prevents genetic divergence in sympatry.
C)Because related species are always found in allopatry rather than in sympatry.
D)Because vicariance events are common.
E)Because disruptive selection between forms of traits in sympatric populations is always very strong.

Question

Quizplus · Accepted Answer

In sympatry, there is strong gene flow between populations, which can prevent genetic divergence and speciation. Therefore, it is more likely that speciation occurs in allopatric populations, where there is limited or no gene flow between diverging populations.

Why Is It Likely That MOST Speciation Is Allopatric