The alchemist
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Chadian Arabs mixed maternally with Saharan women. Their mtDNA is diverse, reflecting that. The Arab identity is a tribal one, not autosomal. That's why you can have a Chadian Arab with 90% Nilo-Saharan ancestry but is paternally Arab since his ancestors were patrilocal, marrying non-Arab women and assimilating them to avoid inbreeding too much since their population base was limited in that land initially.Alxamdullilah these are the Chadian Arabs, pure dark Africans, remember the Arabs migrated in huge waves to Africa to seek refuge, land of E-V32