Monogamy and the immune system: Differences in sexual behavior impact bacteria hosted and genes that control immunity

Researchers examined the differences between two species of mice -- one monogamous and one promiscuous -- on a microscopic and molecular level. They discovered that the lifestyles of the two mice had a direct impact on the bacterial communities that reside within the female reproductive tract. These differences correlate with enhanced diversifying selection on genes related to immunity against bacterial diseases.

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