Iraqw

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The Iraqw are an ethnic and linguistic group based in the Mbulu District of Arusha Region in north-central Tanzania, above the Rift Valley wall and south of Ngorongoro Crater. In 2001 the Mbulu population was estimated to number 462,000 [1]. They speak a Cushitic language belonging to the Afro-Asiatic family. However, their genetic profile shows that they may be descendants of an archaic African population related to Nilotes and distantly to Khoisan, who mixed with Afro-Asiatic speaking people and adopted their language. According to Knight et al. (2003)^{[citation needed]}, a group of 6 Iraqw men consisted of one man belonging to Y-haplogroup A. This A-lineage is also found among Khoisan tribes, Cushitic and Ethio-Semitic populations (10% among Oromos and 14% among Amharas). The old origin of the Iraqw is confirmed by the predominance of archaic mtDNA haplogroups L0a and L0f, distantly related to L0d and LOk that were detected in Khoisan tribes.