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Chemical Switch Regulates Gayness?

Gayness may not be in our genes, but in the molecules that regulate them. New research suggests that epigenetic factors -- chemical "switches" attached to genes that turn them on or off -- are a more plausible heritable mechanism behind homosexuality than DNA itself.

Non-genetic changes to gene expression are called epi-marks, for epigenetics, the field of research dealing with the molecular on/off switches. Epi-marks are normally erased between generations, but there's recent evidence that they're sometimes passed from parent to child.

Source: Popular Science. Read full article. (link)

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  • Tonio||

    And I linked to an article about this in the AM links for Dec 12. Always a bridesmaid, never a bride. Sigh.

  • GroundTruth||

    Interesting article bearing out what many in the male gay community (with a knowledge of basic genetics) have long suspected. Too bad the link is so poorly written; a couple of inheritance diagrams would clarify it immensely.