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Close to Andy Coghlan. A heritable analysis of pairs of gay brothers, including sets of twins, has provided the strongest evidence to the present time that gay people are born gay. The cramming clearly links sexual situation in men with two regions of the creature genome that have d�mod� implicated before, one scheduled the X chromosome as well as one on chromosome 8. The finding is an important contribution to increasing evidence that being gay is biologically determined degree than a lifestyle top-notch.

The region on the X chromosome picked alibi by the study, signaled Xq28, was originally identified in by Dean Hamer of the US Nationwide Institutes of Health into Bethesda, Maryland, but attempts to validate the find since have been muddled.

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  • (PDF) Twin Studies of Homosexuality | Tim Taylor - stop-acta.info
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  • SEPARATED TWIN STUDIES HOMOSEXUALITY STATISTICS
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  • Twin pairs in which at least one twin is homosexual...
For men, new research suggests that clues to sexual orientation may lie not just in the genes, but in the spaces between the DNA, where molecular marks instruct genes when to turn on and off and how strongly to express themselves. Ngun reported that in studying the genetic material of 47 pairs of identical male twins, he has identified "epigenetic marks" in nine areas of the human genome that are strongly linked to male homosexuality.
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