The great variation of a specific form of immune genes makes organ transplants so complicated. On the other hand, we need such a great variability in order to resist infectious diseases. This is why it also plays a major ...
Biotechnology
Jan 10, 2012
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In the animal world, males typically search for their female partners. The mystery is that in some species, you get a reversal -- the females search for males.
Plants & Animals
Sep 28, 2011
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An older man whose female partner is chummy with his pals is more likely to suffer from sexual dysfunction than men who keep their confidantes to themselves, reports a new Cornell study. However, this link disappeared among ...
Social Sciences
Aug 26, 2011
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(PhysOrg.com) -- In a new study titled Male-Female Coevolution in the Wild: Evidence from a Time Series in Artemia Franciscana and published in Evolution, evolutionary ecologist Nicolas Rode from the Centre for Functional ...
How do females select partners? Darwin's initial idea that the fittest males would be the most desirable and would therefore be most likely to secure partners has represented a cornerstone of evolutionary theory since the ...
Plants & Animals
May 27, 2011
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Mate guarding is classified as excessive or unwarranted jealous or protective behavior towards a spouse or mate. This is common among many different species and can be useful to defend territory, guarantee paternity, or prevent ...
Social Sciences
Feb 1, 2011
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Brown University sociologists have developed a device to gather more reliable data about risky sexual behavior among Ethiopian teenagers and young adults than conventional face-to-face interviews can produce. Simple, portable, ...
Social Sciences
Dec 14, 2010
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In modern culture, it is not considered socially acceptable for married people to have extramarital sexual partners. However, in some Amazonian cultures, extramarital sexual affairs were common, and people believed that when ...
Social Sciences
Nov 10, 2010
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(PhysOrg.com) -- Promiscuous males are so intent on pursuing sexual partners that they can neglect even essential tasks such as eating, says a new study published in the Journal of Evolutionary Biology.
Evolution
Sep 3, 2010
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(PhysOrg.com) -- Females with fewer sexual partners can explain where bird species have evolved to cooperate in the rearing of their young, according to Oxford University research.
Plants & Animals
Aug 19, 2010
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