Quote:
Originally Posted by Undertoad
8,000 Years Ago, 17 Women Reproduced For Every One Man
If you read the article you will find that they have theories about why this is so, but nobody really knows!! All they know is that it's the first marker that human culture affected evolution.
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Well, that took a month.
ScienceAlert:
"Something Weird Happened to Men 7,000 Years Ago, And We Finally Know Why"
Quote:
... within a clan, women could have married into new clans, while men stayed with their own clans their entire lives. This would mean that, within the clan, Y chromosome variation is limited.
However, it doesn't explain why there was so little variation between different clans. However, if skirmishes wiped out entire clans, that could have wiped out many male lineages - diminishing Y chromosome variance.
Computer modelling have verified the plausibility of this scenario. Simulations showed that wars between patrilineal clans, where women moved around but men stayed in their own clans, had a drastic effect on Y chromosome diversity over time.
It also showed that a social structure that allowed both men and women to move between clans would not have this effect on Y chromosome diversity, even if there was conflict between them.
This means that warring patrilineal clans are the most likely explanation, the researchers said.
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Wall of nerd shit! Break it down:
Only sons of Anthony are allowed in clan A
Only sons of Barry are allowed in clan B
Women can go between clans (because they are
whores property not warriors)
Clan A wipes out entire clan B
Now there is genetic diversity of women but not of men
It happens at the development of agriculture, because that is the point where clans/tribes stabilize and become much larger, and longer-lived.