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Genetic Closeness of the East/West African SNP population clusters (blog source)
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[QUOTE]Originally posted by Dead: [QB] I will accept it would have been the 'autochthonous' inhabitants of each region that were assimilation into the African gene-pool, not vice-versa. But there was never total replacement: "regional continuity is expected only for some traits as the result of genetic drift and selection acting to maintain high frequencies of a trait within a region" -- Relethford. The 4 European regional traits in question are horizontal-oval (H-O) shaped mandibular foramen, mastoid tubercle, suprainiac fossae and nasion projection (BNL/NOL). But I also see nasal narrowing as a 5th regional European trait (this was also recognised by Frayer et al. 1993). [IMG]http://s7.postimg.org/3yvkts5m3/Neanderthal.png[/IMG] Frayer, D. W. (1992). Evolution at the European edge: Neandertal and upper Paleolithic relationships. Préhistoire Européene/European Prehistory 2, 9–69. In regards to the H-O mandibular foramen: "The trait appears to be a European marker since it is very rare outside Europe, where it is found in only one fossil mandible from Africa, Asia, or Australia. Yet, the H-O mandibular foramen is common in European Neanderthals (53%) and in early Upper Palaeolithic [European] people (18%)" (Frayer, 1997) Stringer concedes: "Nevertheless, as mentioned above, we are ready to consider all documented evidence for regional continuity, and we assume that some trait might finally turn out the be reliable evidence for continuity. Among them could be the horizontal-oval (h-o) mandibular foramen" (Brauer & Stringer, 1997) [/QB][/QUOTE]
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