Chimpanzees are more likely to reproduce with mates whose genetic makeup most differs from their own, and are unusual in that even among nonrelatives and virtual strangers they can tell genetically similar mates from more distant ones, finds Duke evolutionary anthropologists in a new study.

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Chimpanzees are more likely to reproduce with mates whose genetic makeup most differs from their own, and are unusual in that even among nonrelatives and virtual strangers they can tell genetically similar mates from more distant ones, finds Duke evolutionary anthropologists in a new study.