![]() Along with gametic isolation, temporal isolation, ecological isolation, and behavioral isolation it limits which species can breed with one another, thus preventing different species from merging into one species. However, the division of a population by physical barriers permits the formation of hybrids by making a hybridization zone. Heather Scoville is a former medical researcher and current high school science teacher who writes science curriculum for online science courses. ![]() Since there are so many prezygotic isolations (mechanical, habitat, gametic, behavioral, and temporal isolations), it stands to reason that nature prefers these hybrids not even form in the first place. Prezygotic isolation always prevents copulation. Selection and genetic drift will act differently on these two different genetic backgrounds, creating genetic differences between the two new species. ![]() ![]() Allopatric speciation (1) occurs when a species separates into two separate groups which are isolated from one another. ![]() Habitat isolation, behavioral isolation, temporal isolation, mechanical isolation and gametic isolation are all examples of prezygotic isolating mechanisms. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |