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Nature 451, 640-641 (7 February 2008) | doi:10.1038/451640a; Published online 6 February 2008

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Evolutionary genetics: Who shouldn't be your daddy

Patrick C. Phillips1

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Unusual reproductive incompatibility has been discovered between two strains of a nematode worm. This finding indicates that natural selection can generate long-term divergence within self-fertilizing populations.

Reproductive incompatibility is the stuff of speciation and lies at the heart of the world's tremendous biodiversity. It makes little sense for such incompatibility to be maintained within a species, however.

  1. Patrick C. Phillips is in the Center for Ecology and Evolutionary Biology, University of Oregon, Eugene, Oregon 97403, USA.
    Email: pphil@uoregon.edu

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