Sympatric speciation differs from allopatric speciation because in sympatric speciation
A)a population becomes geographically isolated.
B)two populations of the same species merge to form a single population.
C)polyploidy must first arise.
D)hybrid zones form.
E)there are no physcial barriers against interbreeding.

Question

Quizplus · Accepted Answer

Sympatric speciation occurs without geographical isolation and there are no physical barriers preventing interbreeding. Instead, it typically involves some form of reproductive isolation, such as mating preferences, genetic changes, or niche differentiation, that causes a population to diverge and eventually form a new species. Polyploidy, a type of mutation that increases chromosome number, can also be a mechanism of sympatric speciation, but it is not necessary for it to occur.

Sympatric Speciation Differs from Allopatric Speciation Because in Sympatric Speciation