from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Ecology Occurring in separate, nonoverlapping geographic areas. Often used of populations of related organisms unable to crossbreed because of geographic separation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Not living in the same territory; geographically isolated and thus unable to crossbreed
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. (of biological species or speciation) occurring in areas isolated geographically from one another
The process that von Buch described now goes by the label allopatric speciation.
Paul used this phenomenon known as allopatric speciation to explain the evolution of Hershey Kisses and Snow Caps, both with a similar shape but the latter with a sugar-covered top.
This 'making' of new species is known as allopatric speciation and similar patterns are seen with cichlids in the great lakes of Africa.
If such isolated (termed allopatric) populations accumulate mutations over time, this might lead to the divergence of such populations from each other, and reproductive isolation might arise as a simple byproduct of these separate evolutionary histories.
But the far more vital part of evolutionary theory (or "Darwinism", as the evangelicals call it, if any creationists are still reading) is the idea of allopatric speciation.
Figure 5 shows that among both "allopatric" and "sympatric" taxa, pre-zygotic isolation increases with time, but among sympatic taxa, it increases faster!
For instance, you left out mechanisms of reproductive isolation, e.g. allopatric speciation.
Grant & Grant, The secondary contact phase of allopatric speciation in Darwin's finches, PNAS 2009
This is my issue with what is called "symaptric speciation" and "allopatric speciation".
In the plan, students visit recommended Web sites and utilize multimedia features to gain an understanding of "the difference between allopatric and sympatric speciation."
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