Genetic substructure and complex demographic history of South African Bantu speakers

Sengupta, Dhriti, Choudhury, Ananyo ORCID: 0000-0001-8225-9531, Fortes-Lima, Cesar ORCID: 0000-0002-8972-3357, Aron, Shaun, Whitelaw, Gavin ORCID: 0000-0003-1638-7222, Bostoen, Koen ORCID: 0000-0003-2284-6165, Gunnink, Hilde, Chousou-Polydouri, Natalia, Delius, Peter, Tollman, Stephen ORCID: 0000-0003-0744-7588
et al (show 7 more authors) (2021) Genetic substructure and complex demographic history of South African Bantu speakers. Nature Communications, 12 (1).

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<jats:title>Abstract</jats:title><jats:p>South Eastern Bantu-speaking (SEB) groups constitute more than 80% of the population in South Africa. Despite clear linguistic and geographic diversity, the genetic differences between these groups have not been systematically investigated. Based on genome-wide data of over 5000 individuals, representing eight major SEB groups, we provide strong evidence for fine-scale population structure that broadly aligns with geographic distribution and is also congruent with linguistic phylogeny (separation of Nguni, Sotho-Tswana and Tsonga speakers). Although differential Khoe-San admixture plays a key role, the structure persists after Khoe-San ancestry-masking. The timing of admixture, levels of sex-biased gene flow and population size dynamics also highlight differences in the demographic histories of individual groups. The comparisons with five Iron Age farmer genomes further support genetic continuity over ~400 years in certain regions of the country. Simulated trait genome-wide association studies further show that the observed population structure could have major implications for biomedical genomics research in South Africa.</jats:p>

Item Type: Article
Divisions: Faculty of Humanities and Social Sciences > School of Histories, Languages and Cultures
Depositing User: Symplectic Admin
Date Deposited: 02 Nov 2023 09:18
Last Modified: 02 Nov 2023 09:18
DOI: 10.1038/s41467-021-22207-y
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