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Red Herring

The Red Herring ‘Gay Gene,’ And How Sexuality Is More Than Just Genetics by Chris Weller.

Just recently, the largest twin study to date examining genes’ influence on homosexuality was published in the journal Psychological Medicine. The study involved 409 pairs of homosexual brothers. Genome-wide analyses showed strong evidence, the researchers claimed, that two chromosomes, X and chromosome 8, mediated homosexuality based on the genes they shared.

For some experts, particularly those involved with the work, the findings had “landmark” written all over them. But for those less optimistic, the study was flimsy and statistically mediocre, if outright insignificant. Even Dr. Alan Sanders, a behavioral genetics researcher at NorthShore University HealthSystem Research Institute and the study’s lead author, said the evidence “is not proof, but it’s a pretty good indication” that genes wield some influence on sexuality.

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