Evolution of the foreskin: Difference between revisions
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|title=The Origin of Species | |title=The Origin of Species | ||
|chapter=Four: Natural Selection | |chapter=Chapter Four: Natural Selection | ||
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=== Morphology === | === Morphology === | ||
The [[prepuce]] has been well conserved by evolution.<ref name="cold-mcgrath"/> In primates, the [[foreskin]] has been present in the genitalia of both sexes of mammals for at least 65 million years and likely has been present for over 100 millions years of evolution, based on its commonality as an anatomical feature in mammals.<ref>{{REFbook | The [[prepuce]] has been well conserved by evolution.<ref name="cold-mcgrath"/> In primates, the [[foreskin]] has been present in the genitalia of both sexes of mammals for at least 65 million years and likely has been present for over 100 millions years of evolution, based on its commonality as an anatomical feature in mammals.<ref>{{REFbook | ||