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East Africans may have up to a quarter of Asian and European DNA, says report
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[QUOTE]Originally posted by zarahan- aka Enrique Cardova: [QB] [QUOTE]Originally posted by Doug M: [qb] [QUOTE]Originally posted by zarahan- aka Enrique Cardova: [qb] Well some Europeans have up to 25% African DNA, depending on the marker measured, and the study considered. Those who talk about "mixed race" in Africa often only want to talk about "mixes" ONE-way. [IMG]http://2.bp.blogspot.com/-uuGHFa_EarY/VL3saUUDI7I/AAAAAAAABVA/UhyVo-fb_BU/s1600/African_hape_e3b_europe.jpg[/IMG] [/qb][/QUOTE]Exactly. Notice that they try and put all these hypothetical ancient Eurasian populations as 'pure' non black, non African populations totally ignoring and downplaying that ALL humans came from Africa. And that is the point. They don't want to point out that ALL humans came from Africa which makes ALL DNA ultimately African which is why they keep playing this game. You got these scientists calling DNA "Eurasian" thousands of years later after theoretical arrival from outside Africa, yet the DNA of Africans outside Africa is NEVER called African even right after it arrived. Notice that double standard? Africans left Africa 60,000 years ago and they stop calling them Africans as soon as they leave the continent. These people are silly. [/qb][/QUOTE]Indeed. And even in the case of ancient "back migration" which no one doubts has occurred: a) The people "back flowing" already looked like Africans b) Some "Backflowees" developed unique DNA variants that are found mostly in Africa. So why aren't they called African? In Europe various unique DNA variants are held to be European. But in Africa, a different double standard applies. [IMG]http://thewaterproject.org/images/girl-with-clean-water-sudan.jpg[/IMG] The internal flow.. from Africa.. [b]DNA study casts doubt on some claimed levels of back-migration from Asia to Africa for all variants of R1b. The V88 DNA marker claimed to have "back-flowed" solely from Eurasia is better explained by migration from the South, WITHIN Africa[/b] QUOTE: "Human Y chromosomes belonging to the haplogroup R1b1-P25, although very common in Europe, are usually rare in Africa. However, recently published studies have reported high frequencies of this haplogroup in the central-western region of the African continent and proposed that this represents a 'back-to-Africa' migration during prehistoric times. To obtain a deeper insight into the history of these lineages, we characterised the paternal genetic background of a population in Equatorial Guinea, a Central-West African country located near the region in which the highest frequencies of the R1b1 haplogroup in Africa have been found to date. In our sample, the large majority (78.6%) of the sequences belong to subclades in haplogroup E, which are the most frequent in Bantu groups. However, the frequency of the R1b1 haplogroup in our sample (17.0%) was higher than that previously observed for the majority of the African continent. Of these R1b1 samples, nine are defined by the V88 marker, which was recently discovered in Africa. As high microsatellite variance was found inside this haplogroup in Central-West Africa and a decrease in this variance was observed towards Northeast Africa, our findings do not support the previously hypothesised movement of Chadic-speaking people from the North across the Sahara as the explanation for these R1b1 lineages in Central-West Africa. The present findings are also compatible with an origin of the V88-derived allele in the Central-West Africa, and its presence in North Africa may be better explained as the result of a migration from the south during the mid-Holocene." --Gonzalez et al 2013. The genetic landscape of Equatorial Guinea and the origin and migration routes of the Y chromosome haplogroup R-V88. Eur J Hum Genet. 2013 Mar;21(3):324-31. [IMG]https://3.bp.blogspot.com/-_i3pfhD_5f8/VfzQr0HjpqI/AAAAAAAAB1Y/w1nrQVcPvxE/s1600/R1b_v88_backflow_within_africa.jpg[/IMG] [b]All agree that ancient tribes and groups might have moved back and forth from Africa to Arabia and the Levant and vice versa tens of thousands of years ago. Just nomads can do that easily following herds, or people can move in response to climate changes or food resource fluctuations. But whatever the reason, the peoples shuffling back and forth looked like Africans, no matter what label is put on them.. It makes little difference.. [/b] [IMG]http://4.bp.blogspot.com/-T6tMRC_K1aM/U8XDhfPy59I/AAAAAAAABB8/LRMPjl0yXjk/s1600/backflowblues.jpg[/IMG] [/QB][/QUOTE]
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