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[QUOTE]Originally posted by the lioness,: [QB] L. LUCA CAVALLI-SFORZA Genes, peoples, and languages Proc. Natl. Acad. Sci. USA Vol. 94, pp. 7719 –7724, July 1997 article version (not book) in html http://www.ncbi.nlm.nih.gov/pmc/articles/PMC33682/ The Ethiopians genotype is more than 50% African. It is difficult to say if they originated in Arabia and are therefore Caucasoids who, like Lapps, had substantial gene flow after they migrated to East Africa, or if they originated in Africa and had substantial gene flow from Arabia, but not enough to pass the 50% mark. We are not helped by knowledge of the origin of Afro-Asiatic languages, which are by far the most common ones spoken in Ethiopia but are also spoken in North Africa, Arabia, and the Middle East..... Gene and language replacement can to some extent blur the congruence expected between the two types of evolution, but not completely. The accumulation of further genetic and linguistic data will facilitate the study of the relationship between the two evolutions, making it easier to use the genetic tree for predicting the history of linguistic evolution. Charles Darwin had precisely anticipated this development in his first book, The Origin of Species, published in 1859. But the opposite can also happen, and we look forward to linguistic data for ideas about still undetected genetic relationships. Above all we need an increase in genetic data, which modern molecular techniques such as microsatellite analysis and chip hybridization make possible and unusually powerful. The generation of a world collection of stored DNAs for distribution to scientists is the aim of the Human Genome Diversity Project, the feasibility of which is currently being investigated by the National Research Council and by the National Science Foundation. [/QB][/QUOTE]
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