DNA Study of Mexican Cave Find
Posted: Thu May 15, 2014 6:10 pm
A 12,000-13,000 year old skull supports a single founding population arriving from Beringia:
http://www.washingtonpost.com/national/ ... ml?hpid=z1
From which:
"A paper published Thursday online in the journal Science argues that the discrepancy in appearance between the Paleoamericans and later Native Americans is most likely the result of recent, and relatively rapid, human evolution — and not the result of subsequent migrations of people into the Americas."
"Tests on mitochondrial DNA taken from Naia show that she had a genetic marker common today across the Americas, one that scientists say evolved in a prehistoric population that had been isolated for thousand of years in Beringia, the land mass between Alaska and Siberia that formed a bridge between the continents during the Ice Ages.
Thus, according to the report, the Native Americans and the Paleoamericans are the same people, descended from the same Beringia population. They just look different because of recent evolution.".........
".........Chatters, the lead author, said he is working on another paper in which he will lay out his theory of the “Human Wild Style” population.
He believes that these early migrants were an aggressive breed — risk-takers and novelty-seekers. They chased wild game, including megafauna such as mastodons and saber-toothed cats, into unpopulated lands far from their ancestral hunting grounds.
But later, as their descendants settled down and adopted agriculture, natural selection favored a gentler sort of personality, and men and women took on softer, more feminine features, Chatters argues. This tendency toward “neotony,” or natural selection of more childlike features, has been seen across much of the world, he said."
http://www.washingtonpost.com/national/ ... ml?hpid=z1
From which:
"A paper published Thursday online in the journal Science argues that the discrepancy in appearance between the Paleoamericans and later Native Americans is most likely the result of recent, and relatively rapid, human evolution — and not the result of subsequent migrations of people into the Americas."
"Tests on mitochondrial DNA taken from Naia show that she had a genetic marker common today across the Americas, one that scientists say evolved in a prehistoric population that had been isolated for thousand of years in Beringia, the land mass between Alaska and Siberia that formed a bridge between the continents during the Ice Ages.
Thus, according to the report, the Native Americans and the Paleoamericans are the same people, descended from the same Beringia population. They just look different because of recent evolution.".........
".........Chatters, the lead author, said he is working on another paper in which he will lay out his theory of the “Human Wild Style” population.
He believes that these early migrants were an aggressive breed — risk-takers and novelty-seekers. They chased wild game, including megafauna such as mastodons and saber-toothed cats, into unpopulated lands far from their ancestral hunting grounds.
But later, as their descendants settled down and adopted agriculture, natural selection favored a gentler sort of personality, and men and women took on softer, more feminine features, Chatters argues. This tendency toward “neotony,” or natural selection of more childlike features, has been seen across much of the world, he said."