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[QUOTE]Originally posted by Ish Gebor: [QB] Based on this the population origin is at East Africa, SSA. AKA the South. [i]Cruciani et al. 2007 use the term Northeastern Africa to refer to Egypt and Libya, as shown in Table 1 of the study. Prior to Cruciani et al. 2007, Semino et al. 2004 East Africa as a possible place of origin of E-M78, based upon Ethiopian testing. This was because of the high frequency and diversity of E-M78 lineages in the region of Ethiopia. However, Cruciani et al. 2007 were able to study more data, including populations from North Africa who were not represented in the Semino et al. 2004 study, and found evidence that the E-M78 lineages which make up a significant proportion of some populations in that region, were relatively young branches (see E-V32 below). They therefore concluded that "Northeast Africa" was the likely place of origin of E-M78 based on "the peripheral geographic distribution of the most derived subhaplogroups with respect to northeastern Africa, as well as the results of quantitative analysis of UEP and microsatellite diversity". So according to Cruciani et al. 2007 E-M35, the parent clade of E-M78, originated in East Africa, subsequently spread to Northeast Africa, and then there was a "back migration" of E-M215 chromosomes that had acquired the E-M78 mutation. Cruciani et al. 2007 therefore note this as evidence for "a corridor for bidirectional migrations" between Northeast Africa (Egypt and Libya in their data) on the one hand and East Africa on the other. The authors believe there were "at least 2 episodes between 23.9–17.3 ky and 18.0–5.9 ky ago".[/i] —wiki [IMG]http://i63.tinypic.com/6ga3bk.jpg[/IMG] [IMG]http://i68.tinypic.com/xgcn6v.jpg[/IMG] —Sarah Tishkoff et al. [/QB][/QUOTE]
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