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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
History of click-speaking populations of Africa inferred from mtDNA and Y chromosome genetic variation
Molecular Biology and Evolution, Volume 24, No. 10, Year 2007
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Description
Little is known about the history of click-speaking populations in Africa. Prior genetic studies revealed that the click-speaking Hadza of eastern Africa are as distantly related to click speakers of southern Africa as are most other African populations. The Sandawe, who currently live within 150 km of the Hadza, are the only other population in eastern Africa whose language has been classified as part of the Khoisan language family. Linguists disagree on whether there is any detectable relationship between the Hadza and Sandawe click languages. We characterized both mtDNA and Y chromosome variation of the Sandawe, Hadza, and neighboring Tanzanian populations. New genetic data show that the Sandawe and southern African click speakers share rare mtDNA and Y chromosome haplogroups; however, common ancestry of the 2 populations dates back >35,000 years. These data also indicate that common ancestry of the Hadza and Sandawe populations dates back >15,000 years. These findings suggest that at the time of the spread of agriculture and pastoralism, the click-speaking populations were already isolated from one another and are consistent with relatively deep linguistic divergence among the respective click languages. © 2007 The Authors.
Authors & Co-Authors
Tishkoff, Sarah A.
United States, College Park
University of Maryland, College Park
Gonder, Mary Katherine
United States, College Park
University of Maryland, College Park
United States, Albany
State University of new York Albany
Henn, Brenna Mariah
United States, Palo Alto
Stanford University
Mortensen, Holly
United States, College Park
University of Maryland, College Park
Knight, Alec
United States, Palo Alto
Stanford University
Gignoux, Christopher R.
United States, Palo Alto
Stanford University
Fernandopulle, Neil
United States, Palo Alto
Stanford University
Lema, Godfrey
Tanzania, Dar es Salaam
Muhimbili University of Health and Allied Sciences
Nyambo, Thomas B.
Tanzania, Dar es Salaam
Muhimbili University of Health and Allied Sciences
Ramakrishnan, Uma
India, Bengaluru
National Centre for Biological Sciences
Reed, Floyd A.
United States, College Park
University of Maryland, College Park
Mountain, Joanna L.
United States, Palo Alto
Stanford University
Statistics
Citations: 223
Authors: 12
Affiliations: 5
Identifiers
Doi:
10.1093/molbev/msm155
ISSN:
07374038
e-ISSN:
15371719
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study