Dictionary » A » Allopatric



(Science: ecology) Relating to or involving two populations of the same species which cannot interbreed because they are separated by a geographic barrier (such as a mountain range or wide river).

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Help with Biology Question

... enough to be considered a new species? If the Lake copepods are, indeed, a new species, which mechanism of speciation most likely occurred: allopatric or sympatric speciation, and why?

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by killian07
Sun Dec 11, 2011 9:55 pm
Forum: General Discussion
Topic: Help with Biology Question
Replies: 2
Views: 2162

3 models for genetic isolation

... corrections. Are these in fact "models?" In your own words explain three models that bring about the genetic isolation of a population • Allopatric and sympatric speciation- Something happens (i.e. geographical isolation, ecological isolation) to a population that isolates the gene flow. ...

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by hannahzarzar
Wed Aug 31, 2011 5:31 am
Forum: Evolution
Topic: 3 models for genetic isolation
Replies: 1
Views: 3971

Common ancestor question

... those differences. If that were true, it could easily be reproductively isolated and its genes not passed on. A good mehcanism for evolution is allopatric speciation.

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by plasmodesmata11
Tue May 25, 2010 11:33 pm
Forum: Evolution
Topic: Common ancestor question
Replies: 5
Views: 9786

Re: Ancestor or Contemporary?

... Protista and its study in the microfossil record: a review, Paleobiology 9:327-340. The horse series in North America also shows examples of both allopatric and sympatric speciation between the Eocene and the Pleistocene periods.

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by robsabba
Thu Apr 01, 2010 2:40 pm
Forum: Evolution
Topic: Ancestor or Contemporary?
Replies: 3
Views: 3479

Re: Wolf - Chihuahua - Great Dane: same species ?

... no intermediate species, i.e. B has evolved directly from A in one step ? Here's an example with a fruit fly species: An experiment demonstrating allopatric speciation in the fruit fly (Drosophila pseudoobscura) conducted by Diane Dodd. A single population of flies was divided into two, with one ...

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by robsabba
Wed Dec 02, 2009 3:57 pm
Forum: Evolution
Topic: Wolf - Chihuahua - Great Dane: same species ?
Replies: 12
Views: 15968
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