Gene-Environment Effects on Female Fertility

Barban, Nicola; Cao, Elisabetta De; Francesconi, Marco

doi:10.2139/ssrn.4114282

Cited by 1 publication

(2 citation statements)

References 106 publications

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“…Because in such low fertility populations, reproductive success is not necessarily correlated with mating success (e.g., Refs. 81 and 82), it is usually not known whether sexual selection that favors masculinity is currently converted into higher fitness of masculine men. This study shows that this is indeed the case in our study population, at least as regards grip strength, shoulder width, and shoulder/hip ratio and various measures of linear growth (assuming that those are proxies for masculinity and/or attractiveness).…”

Section: Discussionmentioning

confidence: 99%

“…6, 13, and 84). Genetic influences on the expression of morphometric and behavioral traits in humans are high 85 and increasing in postindustrial populations 39,82,86 . Such traits (including LRS) are also highly polygenic 87 and show high cross‐sex genetic correlations, meaning that largely the same genes and regulatory regions affect the trait expression in males and females 65,88–91 .…”

Section: Discussionmentioning

confidence: 99%

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Sexually antagonistic selection on educational attainment and body size in Estonian children

Valge

Meitern

Hõrak

2022

Annals of the New York Academy of Sciences

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Natural selection is a key mechanism of evolution, which results from the differential reproduction of phenotypes. We describe fecundity selection at different parity transitions on 15 anthropometric traits and educational attainment in Estonian children sampled in the middle of 20th century. The direction of selection on educational attainment and bodily traits was sexually antagonistic, and it occurred via different parity transitions in boys and girls. Compared to boys with primary education, obtaining tertiary education was associated with 3.5 times and secondary education two times higher odds of becoming a father. Transition to motherhood was not related to educational attainment, while education above primary was associated with lower odds (OR = 0.5-0.7) to progression to parities above one and two. Selection on anthropometric traits occurred almost exclusively via childlessness in boys, while among the girls, most of the traits that were associated with becoming a mother were additionally associated with a transition from one child to higher parities. Male (but not female) fitness was thus primarily determined by traits related to mating success.Selection favored stronger and larger boys and smaller girls. Selection on girls favored some traits that associate with perceived femininity, while other feminine traits were selected against.

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Section: Discussionmentioning

confidence: 99%