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Northern Arab Sudanese look like the average Black African
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[QUOTE]Originally posted by Chimu: [QB] The Usage of Caucasian is a unfortunate left over from racialism of the past. But if you read the study you realize they use the term to refer to all near easterners. SO just switch the word. The markers still show back migration into Africa And it is not modern but dates back to the Holocene [QUOTE]"Several mtDNA haplogroups—such as (preHV)1, U6, and some subbranches of L3 that Ethiopians share with North African populations—display coalescent times in the early Holocene (table 3) a similar period to that estimated for North and East African Y chromosomes in haplogroup E3b1-M78, which is abundant and may have originated in Ethiopia (Cruciani et al. 2004; Luis et al. 2004). It is interesting that, like E3b1-M78, these mtDNA haplogroups are infrequent or absent in our Yemeni sample (table 1). Note that the identified time window is close to the proposed division of the Semitic and Cushitic branches of Afro-Asiatic languages (Militarev 2003) and corresponds broadly to the beginning of deep environmental changes in the deserts of the Sahara and the Arabian Peninsula, when those regions recovered from their widest span and most extreme aridity during the Last Glacial Maximum period. On the other hand, similar to mtDNA haplogroup (preHV)1, Y-chromosomal haplogroup J1-M267 can be identified as the sole branch that is highly abundant in the Near and Middle East and in northeastern and East Africa (Underhill et al. 2000; Semino et al. 2002, 2004; Luis et al. 2004). Higher STR diversity of this Y-chromosomal clade among Europeans and Ethiopians, as compared with populations from northeastern Africa and the Middle East, suggests that it may have reached Ethiopia (and Europe) early in the Holocene, whereas its frequent spread in North Africa and the Middle East may have been driven by the expansion of Arabs since the 7th century (Semino et al. 2004).[/QUOTE] [/QB][/QUOTE]
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