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Mechanisms of natural selection
Divergent selection, and not genetic drift, promotes parallel evolution of sexual isolation in the walking-stick insect.
Email: Tudor Toma - t.toma@ic.ac.uk News from The Scientist 2002, 3(1):20020523-02
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Considerable debate still exists bout the precise nature of the mechanisms involved in the process of natural selection. In 23 May Nature, Patrik Nosil and colleagues from Simon Fraser University, Burnaby, Canada, show that divergent selection for host adaptation, and not genetic drift, has promoted the parallel evolution of sexual isolation in the walking-stick insect Timema cristinae (Nature 2002, 417:440-443).
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