Prenatal Hormone Exposure and Sexual Variation
The content you've requested is available without charge only to active Sigma Xi members and American Scientist subscribers.
If you are an active member or an individual subscriber, please log in now in order to access this article.
If you are not a member or individual subscriber, you can:
Sex hormones expressed during embryonic development establish the reproductive anatomy and behavior of mammals. In species that give birth to large litters, embryos line up in the uterus like peas in a pod, so that females that develop next to male siblings are exposed to more testosterone than their sisters. They are less successful at mating, but are more aggressive and have larger home territories. These findings may help fill in some gaps in our understanding of environmental influences on health and reproduction. Rodent experiments have also shown that pollutants can mimic or interfere with hormones and maternal stress during gestation and thus alter mating behavior and the timing of sexual maturity. Such experiments may help determine how environmental factors affect human health and reproduction.
Connect With Us:
An early peek at each new issue, with descriptions of feature articles, columns, and more. Every other issue contains links to everything in the latest issue's table of contents.News of book reviews published in American Scientist and around the web, as well as other noteworthy happenings in the world of science books.
To sign up for automatic emails of the American Scientist Update and Scientists' Nightstand issues, create an online profile, then sign up in the My AmSci area.
JSTOR, the online academic archive, contains complete back issues of American Scientist from 1913 (known then as the Sigma Xi Quarterly) through 2005.
The table of contents for each issue is freely available to all users; those with institutional access can read each complete issue.
View the full collection here.
Receive notification when new content is posted from the entire website, or choose from the customized feeds available.