Sexual orientation, handedness, sex ratio and fetomaternal tolerance-rejection

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Valenzuela,Carlos Y;
(2010)

Fraternal birth order (FBO) appears as a prenatal cause of 15% of homosexual males (gays) through mnemonic maternal anti-male factors. Non-right-handed men seem to be protected from homosexuality. Four hypotheses are proposed: (1) androgenic factors of non-right-handedn... View more