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Increased birth rank of homosexual males: disentangling the older brother effect and sexual antagonism hypothesis

2022-02-28

Abstract excerpt

<h4>ABSTRACT</h4> Male homosexual orientation remains a Darwinian paradox, as there is no consensus on its evolutionary (ultimate) determinants. One intriguing feature of homosexual men is their higher male birth rank compared to heterosexual men. This can be explained by two non-exclusive mechanisms: an antagonistic effect (AE), implying that more fertile women have a higher chance of having a homosexual son and...

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Literature Corpus work
c53facc7-fd05-546e-b317-5f241e4a1cfd
DOI
10.1101/2022.02.22.481477
Open publication

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Increased birth rank of homosexual males: disentangling the older brother effect and sexual antagonism hypothesisDOI 10.1101/2022.02.22.481477
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