On the edge of Bantu expansions: mtDNA, Y chromosome and lactase persistence genetic variation in southwestern Angola |
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Authors: | Margarida Coelho Fernando Sequeira Donata Luiselli Sandra Beleza and Jorge Rocha |
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Abstract: | Background Current information about the expansion of Bantu-speaking peoples is hampered by the scarcity of genetic data from well identified
populations from southern Africa. Here, we fill an important gap in the analysis of the western edge of the Bantu migrations
by studying for the first time the patterns of Y-chromosome, mtDNA and lactase persistence genetic variation in four representative
groups living around the Namib Desert in southwestern Angola (Ovimbundu, Ganguela, Nyaneka-Nkumbi and Kuvale). We assessed
the differentiation between these populations and their levels of admixture with Khoe-San groups, and examined their relationship
with other sub-Saharan populations. We further combined our dataset with previously published data on Y-chromosome and mtDNA
variation to explore a general isolation with migration model and infer the demographic parameters underlying current genetic
diversity in Bantu populations. |
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