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Speciation's Defining Moment
Genetics and genomics enliven an old controversy on reinforcement
Email: Nick Atkinson - natkinson@the-scientist.com The Scientist 2005, 19(7):30
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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.
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