Sex-of-Offspring Differences between Mothers

Evolutionary biologists and psychologists have long been aware of maternal effects on the secondary sex ratio in mammals. Up till now these have appeared inconsistent but re-analysis of the evidence, focusing on normally distributed maternal testosterone and its physiological and behavioral sequelae...

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Main Author: Valerie J. Grant
Format: Article
Language:English
Published: SAGE Publishing 2008-01-01
Series:Evolutionary Psychology
Online Access:https://doi.org/10.1177/147470490800600117
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author Valerie J. Grant
author_facet Valerie J. Grant
author_sort Valerie J. Grant
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description Evolutionary biologists and psychologists have long been aware of maternal effects on the secondary sex ratio in mammals. Up till now these have appeared inconsistent but re-analysis of the evidence, focusing on normally distributed maternal testosterone and its physiological and behavioral sequelae , reveals some support for the existence of sex-of-offspring differences between mothers. In addition to the animal studies showing a relationship between maternal, testosterone-based dominance and the secondary sex ratio, research on human mothers shows sex-of-offspring differences in a range of testosterone—related attributes (physiological, behavioral and cognitive) measured at varying times from before the child was conceived to the mother's maturity. Further exploration of these differences might help elucidate the problems surrounding sex determination in mammals.
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spelling doaj.art-3fc1fecde59c42faa9ac2ed4b1130cc52022-12-22T00:17:40ZengSAGE PublishingEvolutionary Psychology1474-70492008-01-01610.1177/14747049080060011710.1177_147470490800600117Sex-of-Offspring Differences between MothersValerie J. GrantEvolutionary biologists and psychologists have long been aware of maternal effects on the secondary sex ratio in mammals. Up till now these have appeared inconsistent but re-analysis of the evidence, focusing on normally distributed maternal testosterone and its physiological and behavioral sequelae , reveals some support for the existence of sex-of-offspring differences between mothers. In addition to the animal studies showing a relationship between maternal, testosterone-based dominance and the secondary sex ratio, research on human mothers shows sex-of-offspring differences in a range of testosterone—related attributes (physiological, behavioral and cognitive) measured at varying times from before the child was conceived to the mother's maturity. Further exploration of these differences might help elucidate the problems surrounding sex determination in mammals.https://doi.org/10.1177/147470490800600117
spellingShingle Valerie J. Grant
Sex-of-Offspring Differences between Mothers
Evolutionary Psychology
title Sex-of-Offspring Differences between Mothers
title_full Sex-of-Offspring Differences between Mothers
title_fullStr Sex-of-Offspring Differences between Mothers
title_full_unstemmed Sex-of-Offspring Differences between Mothers
title_short Sex-of-Offspring Differences between Mothers
title_sort sex of offspring differences between mothers
url https://doi.org/10.1177/147470490800600117
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