News Genetics

Chemical tags on DNA appear to differ between gay and straight men

Twin study shows distinct patterns of markers along stretches of the genome

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FLAGGED  A certain pattern of chemical tags on DNA shows up more often in gay men than in straight men, a controversial study in twins suggests.

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By Tina Hesman Saey

- More than 2 years ago

BALTIMORE — Molecular tests may be able to distinguish homosexual from heterosexual men, a small study of twins suggests.