tag:blogger.com,1999:blog-7785493.post4939443855472723139..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: New major study on African ancestryDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-7785493.post-21004721026582274062010-01-09T05:58:29.629+02:002010-01-09T05:58:29.629+02:00The low self-esteem of whites rears its sad sorry ...The low self-esteem of whites rears its sad sorry head once again. Still at trying to claim all things African again.<br /><br /><br />Pathetic.An Africanhttps://www.blogger.com/profile/01949853287652220702noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-61405789020002373732009-12-29T13:23:50.998+02:002009-12-29T13:23:50.998+02:00Very interesting article.
Dienekes, do you know b...Very interesting article.<br /><br />Dienekes, do you know by chance how precise scientists can get about timing the mtDNA?<br /><br />I mean: there is some rough knowledge of timing for branches among Y haplotypes, but: is there something about determining when a given mtDNA haplotype from Africa appeared? <br /><br />I have L1c3 on my mother's side. The link to Africa must be from before 1810 and after 1528 if it was an African slave to the Americas OR it could be some centuries older if it was via someone from the canary Islands or continental Spain. The African haplotypes in Venezuela are the least common among our three main groups<br /><br />I do know there are lots of "sub-Saharan" haplotypes that only appear in the Americas for the moment, partly because there has been so little research in Africa.Keplerhttps://www.blogger.com/profile/11125538872924743270noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-63699491248133058432009-12-23T16:39:25.026+02:002009-12-23T16:39:25.026+02:00I have been checking the supplemental material, sp...I have been checking <a href="http://www.pnas.org/content/suppl/2009/12/16/0909559107.DCSupplementam/stxt01.pdf" rel="nofollow">the supplemental material</a>, specially because I wanted to see if they had deeper K-means clustering and how did it change the components' distribution. <br /><br />I found that at fig. 2 and I feel that K=6 and maybe also K=7 are still very meaningful. Level 6 clustering alone makes marked differences between Xhosa and the other Bantus specially, while at lv 7 Fang also appear largely clustering on their own, while a further component (bright blue) appears as very important among Hausa and Brong. Maybe it's the sampling but there seems to be clear subdivisions among Bantus. In any case, I wanted to know what the growing "green" component meant among Bantus and it seems clearer at K=7: it hides three elements: a "Fang" component, a "Bamoun" component and a "Xhosa" component that may well be Khoisan in fact, as it's low in all other NK peoples). <br /><br />At K=7 the K=5 Mada component (only showing up at that level) is re-absorbed by the Bulala one. So it's surely an artifact to some extent. <br /><br />Anyhow the distinct clustering of Fulani specially at lower levels is quite curious. At the PC analysis Fulani seem from "another planet" so to say (but they never cluster with Caucasoids at all, so they are genuine ultra-Saharan ethnos in all aspects).Majuhttps://www.blogger.com/profile/12369840391933337204noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-68051938854770206812009-12-23T11:25:41.155+02:002009-12-23T11:25:41.155+02:00Seems interesting that the Xhosa fit so nicely on ...Seems interesting that the Xhosa fit so nicely on the north-south (PC2) axis, given the distance in space and time. Does that (and the west-east match on PC1) mean much of Africa's origin (outside the extreme north) is indeed described by the proposed two populations that may have first diverged, what, almost 200,000 years ago, or so?eurologisthttps://www.blogger.com/profile/03440019181278830033noreply@blogger.com