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New E3b paper totally destroys East African "Caucasoid" myth
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[QUOTE]Originally posted by rasol: [QB] [b]Drift, admixture, and selection in human evolution: A study with DNA polymorphisms[/b] (population genetics/simulation/neutral theory) ANNE M. BOWCOCK*t [i]One can show that a branch to a population resulting [b]from admixture tends to be shorter than other branches.[/b][/i] ^ As explained earlier, this is *why* the European branch in graph b) is so short. Europeans do not model as and ancient divergent race, but rather as a recent/admixed population, which by definition has no ancient genotype or phenotype history. short internal genetic distance does not prove that europeans are a homogeneous race. it only proves that they are the product of 'recent' admixture and bottleneck events. morever this fact debunks -any attempt- to model non european populations as if they were 'admixtures' of a non-existent "european" race, as europeans are not the source origin for various 'loci' to begin with. [QUOTE]Originally posted by rasol: [i]"Nuclear DNA studies also contribute to the deconstruction of received racial entities. Ann Bowcock and her colleague's interpretation (Bowcock et al. 1991; Bowcock et al. 1994) of analyses of restriction-site polymorphisms and microsatellite polymorphisms (STRPs) suggests that Europeans, the defining Caucasians, are descendants of a population that arose as a consequence of admixture between already differentiated populations ancestral to (some) Africans and Asians. Therefore, Caucasians would be a secondary type of race due to its hybrid origin and not a primary race".[/i] [IMG]http://www.pnas.org/content/94/15/7719/F1.medium.gif[/IMG] [i]From maximum likelihood estimates the European admixture consisted of 65% Asian and 35% African.[/i] Graph a) shows the pattern and order of African origin, and sub-sequent outmigration, with population splits at each vertex. Graph b) shows the genetic relatedness and distinctiveness of each population, denoted with each vector. Note the relative *length* of the vectors. Not only are Europeans intermidiates between Asia and Africa at the roughly 2/3 and 1/3 ratios denoted by Sforza, but Europeans also show as a decidely *short* vector. This means they are a recent population without and ancient history, and therefore non of the other, more ancient populations shown, can be conceived in terms of admixtures -with- Europeans.[/QUOTE]hybrid - [i]the entity described cannot be understood in terms of it's own originating characteristics as well as by reference to 2 or more descrete elements from which it is *derived.*[/i] Europeans are hybrid. [/QB][/QUOTE]
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