tag:blogger.com,1999:blog-7785493.post8140609784347272841..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: Y-chromosome ties between Taiwan and PolynesiaDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-7785493.post-43013295648027303212011-12-09T02:12:04.131+02:002011-12-09T02:12:04.131+02:00"My thoughts exactly".
However I have..."My thoughts exactly". <br /><br />However I have noticed something very interesting if we are prepared to accept that Polynesian O3a2c is paraphyletic. We can be sure that O3a2c can have reached Tonga no more than about 3000 years ago, having entered the Pacific islands beyond the Northern Solomons perhaps some 2000 years earlier: 5000 years ago. That the movement from Taiwan to the Southern Solomons was rapid is shown by the virtual absence of O3 of any kind along the coast of New Guinea and in the Northern Solomons. So o3a2c expanded from Taiwan around 5-7000 years ago. <br /><br />That raises the distinct probability that O3a2c's expansion as a whole may have been within the same time frame. O3a2c1's expansion must be more recent. Perhaps 4000 years ago. Haplogroup O3a2c1 spread everywhere in an arc across China from Tibet to Japan. Had O3a2c already entered Polynesia by the time that O3a2c1 expanded through China? <br /><br />Even if Polynesian O3a2c turns out to be monophyletic it doesn't alter the dates too considerably. Can anyone seriously claim that O3's expansion has nothing to do with the progressive development of the Neolithic in the East?terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-28795468669913020542011-12-07T06:49:08.350+02:002011-12-07T06:49:08.350+02:00"Didn't we already know that?"
My t..."Didn't we already know that?"<br /><br />My thoughts exactly.Andrew Oh-Willekehttps://www.blogger.com/profile/02537151821869153861noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-3240272235847259292011-12-06T23:39:05.839+02:002011-12-06T23:39:05.839+02:00"Increased Y-chromosome resolution of haplogr..."Increased Y-chromosome resolution of haplogroup O suggests genetic ties between the Ami aborigines from Taiwan and the Polynesian Islands of Samoa and Tonga". <br /><br />Didn't we already know that? However it is interesting to know that Polynesian O3 is now shown to be the derived haplogroup O2a2c*, 'which has previously been observed at only minimal levels in Mainland East Asians (2.0-4.5%)'. However derived O3a2c , in the form of O3a2c1, is reasonably common in Sino-Tibetan speakers evidently but is not very common in Polynesia. My guess is that the Taiwanese O3a2c will eventually be shown to be a single haplogroup within O3a2c, a sort of O3a2c2.terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.com