Allopatric

Allopatric speciation is simply this - if one part of a species becomes separated by a geographic barrier (a mountain range forms, sea level rises, a desert comes into being, a river changes course, a landslide falls, a continent moves, a glacier extends), and stays separate long enough, then its members will no longer be able to breed with the other part of the population and it will therefore have become a different species.

David Horton: Keep Evolution Out of Schools 2009

Allopatric or geographic speciation takes place when 2 populations are geographically isolated from each other by, for example, a mountain chain, or an ocean.

Archive 2006-05-01 AYDIN 2006

Allopatric Speciation the National churches in England and elswehere

"Evolution 101" - Understanding evolution for the layperson in Kansas - The Panda's Thumb 2006

Allopatric speciation involves heavy geographical separation and thus encourages separate species formation from the original parent population.

CreationWiki - Recent changes [en] 2010

Allopatric speciation involves heavy geographical separation and thus encourages separate species formation from the original parent population.

CreationWiki - Recent changes [en] 2010

Allopatric speciation hasn’t lost any relevance in the century and a half since von Buch wrote.

The Song of The Dodo David Quammen 2004

Allopatric speciation hasn’t lost any relevance in the century and a half since von Buch wrote.

The Song of The Dodo David Quammen 2004