|>>|| No. 4344
Again, 3000 years is nothing, changes in a race or ethnicity can be measured in mere centuries. But let's study anatomy for a second, try not to blush if you can, ladies.
Testicles size is correlated with promiscuity in humans and our hairy cousins.
>The relative sizes of male testes often reflect mating systems. In species with promiscuous mating systems, where many males mate with many females, the testes tend to be relatively large. This appears to be the result of sperm competition. Males with large testes produce more sperm and thereby gain an advantage impregnating females. In polygynous species, where one male controls sexual access to females, the testes tend to be small. One male defends exclusive sexual access to a group of females and thereby eliminates sperm competition.
>Studies of primates, including humans, support the relationship between testis size and mating system. Chimpanzees, which have a promiscuous mating system, have large testes compared to other primates. Gorillas, which have a polygynous mating system, have smaller testes than other primates. Humans, which have a socially monogamous mating system, accompanied by moderate amounts of sexual non-monogamy (see incidence of monogamy), have moderately sized testes
Yes, I'm aware this is focused at polygyny, (harem structures) as well as monogamy, but the fact is in both of these scenarios males are not directly competing sexually, thus the need for large balls to inseminate rival females doesn't exist.
Now, to the asians -
>Race differences in testicle size have also been measured (Asians = 9 grams, Europeans = 21 g). This is not just because Europeans have a slightly larger body size. The difference is too large. A 1989 article in Nature, the leading British science magazine, said that the difference in testicle size could mean that Whites make two times as many sperm per day as do Orientals. So far, we have no information on the relative size of Blacks. (Race, Evolution, and Behavior: A Life History Perspective. 2nd Special Abridged Edition. Written by Professor J. Philippe Rushton University of Western Ontario.)
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