How are two different species most likely to evolve from one ancestral species?
A)sympatrically,by a point mutation affecting morphology or behavior
B)sympatrically,due to extensive inbreeding
C)allopatrically,due to extensive inbreeding
D)allopatrically,after the ancestral species has split into two populations
E)phylogenetically,due to heterozygote advantage in hybrids

Question

Quizplus · Accepted Answer

Allopatric speciation, or speciation through geographic isolation, is the most common way for two different species to evolve from one ancestral species. This occurs when a population is separated by a physical barrier, such as a river or mountain range, and over time genetic drift, natural selection, and mutation cause the populations to become genetically distinct and eventually unable to interbreed. This process can take a long time, but it has been observed and documented in many different types of organisms.

How Are Two Different Species Most Likely to Evolve from One