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aries1988 : genetics   4

The Story of the Iberian Peninsula, Told in DNA - The New York Times

The team was able to identify pieces of North African DNA in people across Spain. The researchers estimated that the subjects’ North African ancestors lived about 800 years ago, during Muslim rule.

The researchers were also able to group Spaniards into five genetic clusters. On a map, these groups form five strips running north to south. Those strips line up neatly with history.

At the height of the Muslim rule, a few small Christian states survived on the northern coast of Spain. As Muslims lost power, those states expanded their southern borders, starting roughly 900 years ago.
Iberia  genetics  archaeology  origin  europe  human  migration 
march 2019 by aries1988
Hidden Stories of Chinese Migration and Culture Found in Giant Genetic Study
Comb through the DNA of Chinese people and you’ll find a trace of this culinary story, according to the largest-scale genetic study of Chinese people to date, published Thursday in Cell. The authors reported that a mutation of FADS2, a gene involved in metabolizing fatty acids, is more common in northern than southern populations, indicating a diet richer in animal content. It is one of an assortment of findings resulting from a sweeping analysis of genetic information from 141,431 participants.

Minority ethnic groups showed more genetic divergence than the Han, particularly Uyghurs and Kazakhs in Xinjiang and Mongols in Inner Mongolia.
gene  genetics  chinese  region  comparison  research 
october 2018 by aries1988
人类社会的差异是由基因决定的吗?
他的目标是“正视种族在基因层面的差别,探究人类较晚近时期的进化对历史以及人类社会特质有怎样的揭示。”他的结论是:种族不但真实存在,而且不同种族在基因层面也有常人意想不到的差异。
韦德的主要观点是:人类晚近时期所发生的进化导致不同族群在基因层面出现差异,并进而表现出不同的社会行为。这些在社会行为上的细微差异可以解释为何不同族群所建立的社会制度大相径庭

在对人们的基因组进行统计分析后,相同族群的人的基因组会在一个聚类中,每个聚类又对应一个大洲。种族在这样的统计学意义上是真实存在的。

韦德如此论述道:一旦人类进入定居生活,富人的孩子比穷人的孩子存活的机会大,所以,让富人成为富人的行为之基因将得以传播。因而通过这种自然选择,“精英的某些社会行为将得以逐渐向全社会扩散”。

不同族群在行为倾向(如合作,攻击行为,信任,遵守规则)上丝毫的不同都可能会让各个族群做出不同选择,建立不同的社会制度。“世界上伟大文明之间的差异可能自各文明发源之初便已显现。”

韦德无法做出区分的是:说政治上的敏感性不应当歪曲科学真理当然没错,是事实就是事实;然而,正如平克尔所指出,这不意味着我们可以毫无顾忌地谈论种族问题。历史告诉我们,这是个尤其危险的问题,围绕这个问题的讨论曾经导致了巨大的灾难。认识到这一点并且做到小心翼翼并非什么不科学。
genetics  society  civ  human  debate  race 
september 2018 by aries1988
Searching for Signs of Hannibal’s Route in DNA from Horse Manure - The New Yorker

The ability to test soil directly for genetic material has extended archeology beyond the quest for the usual biological suspects, such as microscopic fossils. The whole business of looking at sediments is bubbling up now—it is taking off because of advances in DNA sequencing, Pallen said. There is a realization that the environment is full of DNA . . . and you can detect it in sediments even in the absence of fossil remains.
genetics  discovery  alpe  italia  spqr  war  warrior  antiquity  animal  archaeology 
may 2016 by aries1988

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