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Speciation's Defining Moment

About 5 pages (1,546 words)

The Scientist, April 11th, 2005

Genetics and genomics enliven an old controversy on reinforcement

Evolutionary biologists, both theoreticians and empiricists, have argued for decades about the relative merits of two speciation scenarios: allopatry and sympatry. The multifaceted debate bristles with any number of sharply contested points, but one that has provoked the greatest polarization is the concept of reinforcement. This is the crucial last step in the process, when behavioral mechanisms finally become established, driving a reproductive wedge between incipient species.

Broad consensus has been reached on what constit...

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Atkinson, Nick. The Scientist, April 11th, 2005. Speciation's Defining Moment. Content provided by HighBeam Research.



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