Study of gay brothers may confirm X chromosome link to homosexuality, Science

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New Data on Birth Order in Homosexual Men and Women and a Reply to Vilsmeier et al. (2021a, 2021b)

Cureus, Sexual Orientation in Twins: Evidence That Human Sexual Identity May Be Determined Five Days Following Fertilization

Male homosexuality and maternal immune responsivity to the Y-linked protein NLGN4Y

There's No Such Thing as a 'Gay Gene,' a New Study Argues

Homosexuality as a Consequence of Epigenetically Canalized Sexual Development

Homosexuality Encyclopedia MDPI

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