Speciation occurs
A) after populations become reproductively isolated.
B) when mutations generate observable differences.
C) when transitional forms develop between different populations.
D) when natural selection pressures reach their maximum.
E) with all of these.

Question

Quizplus · Accepted Answer

Speciation occurs after populations become reproductively isolated, meaning they can no longer interbreed and produce viable offspring. This can result from a variety of factors, including geographic isolation, behavioral differences, or genetic mutations. Once reproductive isolation has occurred, genetic differences can accumulate over time and result in observable phenotypic differences between the two populations, leading to the formation of new species. While mutations, transitional forms, and natural selection can all be part of this process, they are not sufficient on their own for speciation to occur.

Speciation Occurs