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The various faces of Africans: East to West & visa versa
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[QUOTE]Originally posted by Thought2: [QB] [QUOTE]Originally posted by jluis: [b] For a recent article on lactase persistence: Hollox (2005) Evolutionary Genetics: Genetics of lactase persistence - fresh lessons in the history of milk drinking European Journal of Human Genetics (2005) 13, 267-269. doi:10.1038/sj.ejhg.5201297 [URL=http://www.nature.com/cgi-taf/DynaPage.taf?file=/ejhg/journal/v13/n3/abs/5201297a.html&dynoptions=doi1115752054]http://www.nature.com/cgi-taf/DynaPage.taf?file=/ejhg/journal/v 13/n3/abs/5201297a.html&dynoptions=doi1115752054[/URL] For a analysis of the diversity in the Old World, see: Hollox et al. (2001) Lactase Haplotype Diversity in the Old WorldAm. J. Hum. Genet. 68:160–172, 2001 This is the opening sentence of the article: "Lactase persistence, the genetic trait in which intestinal lactase activity persists at childhood levels into adulthood, varies in frequency in different human populations, being most frequent in northern Europeans and certain African and Arabian nomadic tribes, who have a history of drinking fresh milk. Selection is likely to have played an important role in establishing these different frequencies since the development of agricultural pastoralism ª9,000 years ago." This is a map of the main groups with the capacity to drink raw milk when adults. (Sorry, I cannot post it directly) [URL=http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VNH-48WJWGF-8&_coverDate=09%2F30%2F2003&_alid=275843375&_rdoc=1&_fmt=&_orig=search&_qd=1&_cdi=6179&_sort=d&view=c&_a cct=C]http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VNH-48WJWGF-8&_coverDate=09%2F30%2F2003&_alid=275843375&_rdoc=1&_fmt=&_orig=search&_qd=1&_cdi=6179&_sort=d&view=c&_ acct=C[/URL] 000035158&_version=1&_urlVersion=0&_userid=651519&md5=0156d221fc58f756d0007346a4aa8d85 Note that several tribes of the Sudan/Eritrea coast in the Red Sea have this genetic trait in a high degree. Quite interesting for our debates on Beja and others people origin. They share this trait with Arabs, Palestinians, Czechs (slavic), Spaniards and Irish. I'd like to know how can explain this distribution the advocates of race. If they can, then another piece of information: there are only three groups with a high degree outside the Red Coast: the Tutsi, a group in northern Nigeria and another in Benin. Try now to apply "race" to explain that. Others African groups have this trait in a lesser degree and that includes the pastoralist of the Sahel and East Africa not cited above. This means that they get on cattle herding much more recently. The time of the domestication of cattle is usually accepted in 9-10.000 years. The place is disputed, but central Anatolia is a good bet. [This message has been edited by jluis (edited 10 May 2005).] [/b][/QUOTE] [QUOTE]Originally posted by Thought: [b] Thought Writes: We have been over this many times. Use the search feature on Egyptsearch.com [/b][/QUOTE] [/QB][/QUOTE]
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