tag:blogger.com,1999:blog-7785493.post4975235814514676452..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: The tangled web of humanityDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-7785493.post-22893912325395038672012-10-22T03:55:57.001+03:002012-10-22T03:55:57.001+03:00Dienekes and you are probably right that North Eur...<i>Dienekes and you are probably right that North Europeans have some more ancient East Eurasian admixture but much is exaggerated and I think its rather some additional East Eurasian admixture to that found in Proto West Asian (Gedrosia like). So I believe North European = Gedrosia + slight additional Siberian/Amerindian.</i><br /><br />I am not exaggerating, but telling what the F-statistics tests show.Onur Dincerhttps://www.blogger.com/profile/05041378853428912894noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-37985142090007275922012-10-21T00:48:49.648+03:002012-10-21T00:48:49.648+03:00@Onur
"West Asians have much less ancient Eas...@Onur<br />"West Asians have much less ancient East Eurasian admixture than northern Europeans (whether western or eastern)."<br /><br />Dienekes and you are probably right that North Europeans have some more ancient East Eurasian admixture but much is exaggerated and I think its rather some additional East Eurasian admixture to that found in Proto West Asian (Gedrosia like). So I believe North European = Gedrosia + slight additional Siberian/Amerindian.Kurtihttps://www.blogger.com/profile/15370578131814705759noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-9802373174456356812012-10-18T11:48:09.034+03:002012-10-18T11:48:09.034+03:00Unknown,
I'll take a crack at this. The numb...Unknown,<br /><br />I'll take a crack at this. The number is basically the sum over all BABA -ABBA (normalized with all counts), where A vs. B stands for a specific SNP variant that was typed for (and thus may contain biases). In D(European, Sardinian, Indian, San), San is the outside reference, and you are testing whether "European" is closer to Indian where Indian has a particular SNP different from the outside reference (i.e., BABA counts), or Sardinian is closer (ABBA counts). If D is positive and significant, then (sum over all) BABA > ABBA. Of course, one has to be careful that an admixture with the outside reference is <i>not</i> what creates the BABA counts.<br /><br />The four numbers in your question are simply the four results of the D-statistic for the four different "European" populations listed.eurologisthttps://www.blogger.com/profile/03440019181278830033noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-24469009826407418382012-10-18T02:29:37.843+03:002012-10-18T02:29:37.843+03:00What I believe is that the ancestral "North E...<i>What I believe is that the ancestral "North Eurasian" genes are nothing more than just a Northern shifted version of an "Gedrosia" (proto West Asian?) like component. I believe that the East Eurasian similarities in ancestral North Europeans is not admixture but some common ancient affinities.</i><br /><br />That it is due to admixture, and not common descent, with an East Eurasian-like population is beyond doubt. The test results are very robust on that point. There are just some questions about its timing. <br /><br /><i>As we all know the East Eurasian affinities are not exclusive to North Europeans but also find in the West Asian component and just lacking or noisy in Sardinian like populations.</i><br /><br />West Asians have much less ancient East Eurasian admixture than northern Europeans (whether western or eastern).Onur Dincerhttps://www.blogger.com/profile/05041378853428912894noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-2157460940403551972012-10-18T02:26:02.409+03:002012-10-18T02:26:02.409+03:00This comment has been removed by the author.Onur Dincerhttps://www.blogger.com/profile/05041378853428912894noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-47351900378937132152012-10-18T00:48:59.287+03:002012-10-18T00:48:59.287+03:00I believe that the East Eurasian similarities in a...<i>I believe that the East Eurasian similarities in ancestral North Europeans is not admixture but some common ancient affinities. </i><br /><br />The evidence for admixture with the f3 statistic is pretty conclusive evidence for admixture. That statistic does not take negative values for tree topologies that do not involve admixture, so anyway one reshuffles populations to establish "ancient common affinities", he cannot come up with a negative f3.<br /><br />The open question is what were the mixing elements that are represented by Sardinians and Asians/Amerindians today.Dienekeshttps://www.blogger.com/profile/02082684850093948970noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-36670085131852757572012-10-18T00:36:45.668+03:002012-10-18T00:36:45.668+03:00As I previously stated somewhere else. What I beli...As I previously stated somewhere else. What I believe is that the ancestral "North Eurasian" genes are nothing more than just a Northern shifted version of an "Gedrosia" (proto West Asian?) like component. I believe that the East Eurasian similarities in ancestral North Europeans is not admixture but some common ancient affinities. As we all know the East Eurasian affinities are not exclusive to North Europeans but also find in the West Asian component and just lacking or noisy in Sardinian like populations.<br /><br /><br />Kurtihttps://www.blogger.com/profile/15370578131814705759noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-38727781611397684102012-10-17T21:03:35.066+03:002012-10-17T21:03:35.066+03:00I'm quite interested in human origins, and enj...I'm quite interested in human origins, and enjoy reading the information Dienekes posts, but I'm rather lost when these "D-statistics" Dienekes posts.<br /><br />Is there anyone who might offer a simple explanation for a layman? <br /><br />What exactly does the following show, for instance?<br /><br /> Russian Orcadian French Lithuanians ANI<br />Mala 0.0153 0.0120 0.0088 0.0131 38.86<br />Madiga 0.0153 0.0122 0.0091 0.0111 40.66Unknownhttps://www.blogger.com/profile/17042678595634500830noreply@blogger.com