stemelbow wrote:
The authors further noted: "the three smallest genetic distances for the 2,500 year-old Linzi population were from the Turkish, Icelander, and Finnish, rather than from the east Asian populations."39 Not only did a 2,500 year-old population with strong European genetic features live in central China, but these people appears to be the oldest inhabitants of China yet identified. Geneticists are aware of this group, whose genetic features seem to be almost entirely absent from modern Chinese populations, only because of recent research. If we were to imagine a hypothetical Linzi group that might have emigrated to an isolated island in 500 BC, the DNA of their descendants would be completely unrelated to that of modern Chinese and would be classified by proponents of "regional affiliation" genetics as belonging to a European culture group. Self-proclaimed experts would undoubtedly claim that this group had been "proven" not to have originated in China at all. The Linzi data wreak havoc upon the theories of critics who indiscriminately extrapolate the genetics of the modern inhabitants onto ancient peoples without supporting DNA evidence.
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I welcome your thoughts on it.
The original study says, in part:
Based on this present-day reference network, we constructed a network of the mtDNA sequences of the two ancient populations and the present-day people of Linzi (fig. 1 ). Ten individuals of the 2,500-year-old Linzi population had mtDNA type with 16274A; this mtDNA type was not found in either the 2,000-year-old or the present-day Linzi populations. Sixty-five percent (22 of 34) of the individuals of the 2,500-year-old Linzi population belong to group IV, whereas none of the 2,000-year-old population and only 8% of the present-day Linzi population belong to that group. In contrast, 38% (5 of 13) of the 2,000-year-old Linzi population belong to group VI, compared with only 9% and 10% of the 2,500-year-old and the present-day Linzi populations, respectively. The 2,000-year-old and present-day Linzi populations showed high frequencies for group I (23% and 30%, respectively) and for group II (31% and 36%, respectively). Other present-day east Asian populations, including Mongols, Koreans, and mainland Japanese, also have high frequencies for groups I and II (fig. 2 ).
(http://mbe.oxfordjournals.org/content/17/9/1396.full Tenth paragraph down.)
As you can see, the Linzi DNA is present in modern Chinese populations. There is no Mideast or European DNA present (nor found in 2500 year-old fossils, such as in this study) in pre-Columbian Americans.