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Pleistocene North African genomes link Near Eastern and sub-Saharan African human pop
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[QUOTE]Originally posted by Doug M: [QB] [QUOTE]Originally posted by Elmaestro: [qb] [QUOTE]Originally posted by Doug M: [qb] [QUOTE]Originally posted by Elmaestro: [qb] ...Still going. LD decay captures mixture dates going back to over ~300 generations which is an average of rough 9000 years.. the Taforalt samples are upto 15Kya... Math says that 24kyo admixture would be detected. which n respects to the date of the specimen is "recent" nonetheless admixture before 20,000 years ago would be detected. The authors conclude that the SSA ancestry most probably represents continuity from MSA North Africans... Which was also discussed and mentioned on the previous page. ..Doug just concede. [/qb][/QUOTE]I understand what your point but what you are saying has nothing to do with what I said. When I originally said "mixture" I wasn't referring to any specific incidence of mixture as opposed to the "composite" signature overall in Taforalt which contains both Levantine and African DNA. This is the only kind of mixture I am talking about in a general sense. You really had me going there because I know I said it right the first time. So for clarification, [QUOTE]The authors conclude that the SSA ancestry most probably represents continuity from MSA North Africans[/QUOTE]... [b]MIXED WITH Levantine DNA[/b]. Somewhere somehow mixture occurred. They would be HOMOGENOUS if they only carried the African DNA and no Levanine or vice versa. But that wasn't even the core point. It was a general statement about the fact that African DNA should be expected to be found in North Africa as you go back farther in time. That is only obvious. The question is whether these people actually migrated to the Levant before moving to North Africa or not, which is basically what the paper is implying could have happened. The relationship with Natufians would be a sign of this possibility. [/qb][/QUOTE][IMG]https://media.giphy.com/media/8aWjjqeHx6zPq/giphy.gif[/IMG] Just outa respect I'ma cut to the chase and answer the question that you should have been asked. The leading postulation on ES as of now is that the most recent mixture represented by the Taforalt is a mixture between [b]Africans[/b] ....and [b][i]Africans[/b][/i]. Not Levantines or Eurasians. Taforalt wasn't suggested to be the composite that you suggest due to "mixture". The authors don't necessarily conclude on that. It's the Natufians lacking "SSA" admixture who raise the question of which direction geneflow occurred [i]if[/i] it occurred. Do you understand? You are completely off the mark with your talk of mixture. You came in all wrong and you shifted your position a lil bit but you're still wrong. You can still be HOMOGENEOUS and be modeled as two different populations. You can model Yorubans as MButi and Mota. But are yorubans a mixture between Mota and Mbuti... no. are Yorubans relatively homogeneous? yes. So all in all your core point was unnecessarily introduced, and our interaction was a detraction from much much more interesting conversations from basically every other poster in this thread. I'm done. [/qb][/QUOTE]The extract you posted says this: [QUOTE]Abstract North Africa is a key region for understanding human history, but the genetic history of its people is largely unknown. We present genomic data from seven 15,000-year-old modern humans from Morocco, attributed to the Iberomaurusian culture. [b]We find a genetic affinity with early Holocene Near Easterners, best represented by Levantine Natufians, [/b][/QUOTE]Of course I haven't read the whole paper but that is what you posted in the OP. That is what I am going by. Not sure how or why you keep saying that this is not what the extract you posted says. And I don't get the impression from that extract that this population was only composed of African DNA. Of course there is going to be some "Eurasian" DNA in that population. The Levantines would have Eurasian DNA along with African DNA (Natufian). I know other folks have been speaking of mixture on this thread but I am not talking about that mixture. But I get your point. THAT SAID, this does go and show that this would have been a population that never left Africa or was a branch of the same population that entered the Levant as the Natufian affinity shows, but instead went to the West across North Africa. Probably one of the waves of the Africans moving around during the last Saharan wet phase. This is something I have always said concerning the history of North Africa. And it would be that wave of Saharans prior to and up to the last wet phase that would have carried many of the genes we call "Eurasian" today and are labelled as "backmigrants" from Eurasia. This is partly confirmation of that. This also confirms something I said a long time ago about Africans moving out of Africa partly being responsible for the rise of Agriculture in the Levant. http://www.egyptsearch.com/forums/ultimatebb.cgi?ubb=get_topic;f=8;t=009600;p=10#000464 This model could easily be assumed just going by what we already know about North African history and the Sahara. Unfortunately when the Basal Eurasian and EEF papers came up there wasn't enough African DNA to go by to support the assumption. [/QB][/QUOTE]
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