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Nature 445, 158-159 (11 January 2007) | doi:10.1038/445158b; Published online 10 January 2007

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Evolutionary biology: Genetics and bisexuality

Vincent Savolainen1 & Laurent Lehmann2

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A population-genetic model indicates that if there is a gene responsible for homosexual behaviour it can readily spread in populations. The model also predicts widespread bisexuality in humans.

For human societies at large, homosexuality is a sensitive issue. For biologists it is an intriguing one1, 2.

  1. Vincent Savolainen is at the Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond TW9 3DS, UK.
    Email: v.savolainen@kew.org
  2. Laurent Lehmann is in the Department of Genetics, University of Cambridge, Cambridge CB2 3HE, UK.
    Email: l.lehmann@gen.cam.ac.uk

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