tag:blogger.com,1999:blog-7785493.post8926658803333386655..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: Dodecad Project components and East Eurasian-like admixtureDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-7785493.post-44444214418290916612012-08-25T02:00:10.030+03:002012-08-25T02:00:10.030+03:00Interesting that the K12 Siberian component is &qu...Interesting that the K12 Siberian component is "west" (positive end) shifted along this axis, relative to the K12 Southeast Asian and East Asian, when the K12 Southeast Asian, East Asian and Siberian components are roughly equidistant from the West Eurasian components (even the Northwest African), by FST distances - http://1.bp.blogspot.com/-kXZ8Mxu5dns/TybJ7CQJuPI/AAAAAAAAEbk/QYJc4rvQ3ww/s1600/fst.png.<br /><br />Likewise for the East Asian component relative to the Southeast Asian component.<br /><br />What's up with that?Matthttps://www.blogger.com/profile/04517454865405705885noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-33521310982459795062012-08-24T17:36:26.219+03:002012-08-24T17:36:26.219+03:00What's the possibility that some of this effec...What's the possibility that some of this effect is caused by recent African-shifting in southern Europe as opposed to Asian-shifting in Northern Europe?<br /><br />Since Europeans and Asians didn't separate for some 30/60ky after leaving Africa/Arabia, we would expect them to be much closer to each other genetically than to Africans. Even if there were no recent European/Asian admixture all Europeans would be "Asian-shifted" compared to Africans since they share a more recent command ancestor with Asians.<br /><br />Following on from this, could not the apparent increase of Asian influence in the north/west be in part an increase of non-Asian admixture in the south/east? This might explain why the "Asian" influence appears to be related to distance from Africa not distance from Asia.Tobushttps://www.blogger.com/profile/05529220083970625733noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-73187608815054858652012-08-23T23:50:07.563+03:002012-08-23T23:50:07.563+03:00@pconroy, that is a most excellent suggestion!@pconroy, that is a most excellent suggestion!Dienekeshttps://www.blogger.com/profile/02082684850093948970noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-56405182449695948392012-08-23T23:22:55.219+03:002012-08-23T23:22:55.219+03:00@Dienekes,
Maybe I wasn't clear, what I meant...@Dienekes,<br /><br />Maybe I wasn't clear, what I meant is, define the North European component in its own absence. <br /><br />Remember that the Kalash broke out into a separate component at low K, but you were able to resolve this and show that it was something like 65% West Asian IIRC. <br /><br />So maybe the North European component would break into 70% West Asian, 20% Siberian and 10% East Asian or some such?!<br /><br />Is this possible?pconroyhttps://www.blogger.com/profile/10312469574812832771noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-76875190026433112702012-08-23T23:14:36.172+03:002012-08-23T23:14:36.172+03:00@pconroy it split on the euro7 calculator, but wit...@pconroy it split on the euro7 calculator, but with an Fst of only 0.015. Given that the new ADMIXTURE 1.22 method for Fst's removes an upward bias, it's probably even a little lower than that.<br /><br />So, splitting the North European component may be possible, but we're talking about very small differences. It's through the presence of other components (Med, West Asian, Siberian, etc.) that the northern European populations appear to differ from each other.Dienekeshttps://www.blogger.com/profile/02082684850093948970noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-38345934447378353252012-08-23T22:57:07.948+03:002012-08-23T22:57:07.948+03:00Dienekes,
Is it possible to take the North Europe...Dienekes,<br /><br />Is it possible to take the North European (or Atlantic Baltic) component and try and split it into sub-components, like you did with the monolithic Kalash component?<br /><br /> pconroyhttps://www.blogger.com/profile/10312469574812832771noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-79204384482100342472012-08-23T22:15:19.391+03:002012-08-23T22:15:19.391+03:00Dienekes,
Very interesting!
When I look at my Ir...Dienekes,<br /><br />Very interesting!<br /><br />When I look at my Irish parents and other family members in Dodecad "ByChr" mode, I see up to 4.5% East Asian on some Chromosomes.<br /><br />I guess this is a case of the visual and genetic matching.<br />pconroyhttps://www.blogger.com/profile/10312469574812832771noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-73534309365013677532012-08-23T21:48:52.215+03:002012-08-23T21:48:52.215+03:00We can see categories 'absorbing' East Asi...We can see categories 'absorbing' East Asian admixture as we move through the K levels. I've always assumed that this is the reason Siberian admixture is reduced at higher K's: it's hiding in categories like Northern European. This is also true with SSA admixture, I've observed. 'North African' swallows up a lot of the African component at earlier K's, and presumably this is the cause of that component's relative shift toward sub-Saharan Africa. I've always interpeted this as being reflective of the age of the admxiture in question.Anonymousnoreply@blogger.com