6,480
edits
mNo edit summary |
mNo edit summary |
||
Line 524: | Line 524: | ||
===<span style="font-family:'Linux Libertine, Georgia, Times, serif'; font-size:24px; font-weight: normal;">Between 0.8% and 30% of "fathers" are unknowingly raising another man's child as their own</span>=== | ===<span style="font-family:'Linux Libertine, Georgia, Times, serif'; font-size:24px; font-weight: normal;">Between 0.8% and 30% of "fathers" are unknowingly raising another man's child as their own</span>=== | ||
---- | ---- | ||
The Oxford Handbook of Evolutionary Psychology (Louise Barrett;2007) notes that species with higher levels of sperm competition (i.e infidelity and ergo potential cuckoldry) have been evolutionarily selected to have larger testes relative to their body weight then species with low levels of competition. ''H.Sapiens'' occupies an intermediate position among the Great Apes, with Human males having smaller testes then their close cousins ''P. Troglodytes'' (the Chimpanzee) | The Oxford Handbook of Evolutionary Psychology (Louise Barrett;2007) notes that species with higher levels of sperm competition (i.e infidelity and ergo potential cuckoldry) have been evolutionarily selected to have larger testes relative to their body weight then species with low levels of competition. ''H.Sapiens'' occupies an intermediate position among the Great Apes, with Human males having smaller testes then their close cousins ''P. Troglodytes'' (the Chimpanzee) but larger testes then the members of the genus ''Gorilla'', which have the smallest testes owing to very low levels of sperm competition due to their system of mating where a male Silverback hordes a harem of females and wards of potential competitors with violence. | ||
This suggests that Human females have a historical tendency to an intermediate level of infidelity compared to Chimpanzee females, which are noted for their promiscuity. | This suggests that Human females have a historical tendency to an intermediate level of infidelity compared to Chimpanzee females, which are noted for their promiscuity. | ||
edits