ArticleHuman nature (Hawthorne, N.Y.)2018
Possible Balancing Selection in Human Female Homosexuality.
Article in Human nature (Hawthorne, N.Y.), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
8 citing papers in PubMed, 28 citations in OpenAlex.
- Fertility of Czech Gay and Straight Men, Women, and Their Relatives: Testing the Sexually Antagonistic Gene Hypothesis.Archives of sexual behavior · 2024Article
- Carving the Biodevelopment of Same-Sex Sexual Orientation at Its Joints.Archives of sexual behavior · 2023Article
- Carving Non-Proximal Explanations for Same-Sex Sexual Orientation.Archives of sexual behavior · 2023Article
- A Test of the Kin Selection Hypothesis for Female Gynephilia in Thailand.Archives of sexual behavior · 2023Article
- The Direct Reproductive Cost of Same-Sex Attraction: Evidence from Two Nationally Representative U.S. Samples.Archives of sexual behavior · 2022Article
- Did Prosociality Drive the Evolution of Homosexuality?Archives of sexual behavior · 2020Article
- Direct Reproduction and Sexual Orientation and Gender Diversity in Thailand.Archives of sexual behavior · 2020Article
- Prosociality and a Sociosexual Hypothesis for the Evolution of Same-Sex Attraction in Humans.Frontiers in psychology · 2019Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
Abstract
A growing number of researchers suggest that female homosexuality is at least in part influenced by genetic factors. Unlike for male homosexuality, few familial studies have attempted to explore maintenance of this apparently fitness-detrimental trait in the population. Using multiple recruitment methods, we explored fecundity and sexual orientation within the pedigrees of 1,458 adult female respondents. We compared 487 homosexual and 163 bisexual with 808 heterosexual females and 30,203 of their relatives. Our data suggest that the direct fitness of homosexual females is four times lower than the direct fitness of heterosexual females of corresponding ages. The prevalence of nonheterosexuality within the homosexual female respondents' families (2.83%) appear to be more than four times higher than the basal prevalence in the Italian population (0.63%). Pedigree size and relative fecundity in both the paternal and maternal sides of the homosexual women's families were significantly higher than in the heterosexuals' families. If confirmed, the relative average fecundity increase within the family seems to offset the loss in fitness due to the low direct fitness of homosexual females. Therefore, the balanced fecundity in the homosexual females' families may allow the trait to be maintained at a low-frequency equilibrium in the population.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.