Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ajpa.23711 |
Genetic history of Chad | |
Shriner, Daniel; Rotimi, Charles N. | |
通讯作者 | Shriner, Daniel |
来源期刊 | AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
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ISSN | 0002-9483 |
EISSN | 1096-8644 |
出版年 | 2018 |
卷号 | 167期号:4页码:804-812 |
英文摘要 | Objectives The Sahel is a semi-arid zone stretching from the Atlantic Ocean in the west to the Red Sea in the east and from the Sahara in the north to the Sudanian Savanna in the south. Here, we investigated the genetic history of the spread of Northern African ancestry common among Berbers, the Y DNA haplogroup R1b-V88, and Chadic languages throughout the Sahel, with a focus on Chad. Materials and methods Results We integrated and analyzed genotype data from 751 individuals from Chad, Burkina Faso, Mali, South Sudan, and Sudan in the context of a global reference panel of 5,966 individuals. We found that genetic diversity in Chad was broadly divided by a north-south axis. The core ancestry of Southern Chadians was Central African, most closely related to Pygmies. Southern Chadians then experienced four waves of gene flow over the last 3,000 years from West-Central Africans, Eastern Africans, West-Central Africans again, and then Arabians. In contrast, Northern Chadians did not share Central African ancestry and were not influenced by the first wave of West-Central Africans but were influenced by Northern African ancestry. Discussion We found that Y DNA haplogroup R1b entered the Chadian gene pool during Baggarization. Baggara Arabs spoke Arabic, not Chadic, implying that people carrying R1b-V88 were not responsible for the spread of Chadic languages, which may have spread approximately 3,700 years ago. We found no evidence for migration of Near Eastern farmers or any ancient episodes involving Eurasian backflow. |
英文关键词 | Baggara Arabs Berber Chadic genetic anthropology Y DNA haplogroup R1b |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000450310200009 |
WOS关键词 | POPULATIONS ; HAPLOGROUPS ; ADMIXTURE ; ANCESTRY ; AFRICA ; SPREAD |
WOS类目 | Anthropology ; Evolutionary Biology |
WOS研究方向 | Anthropology ; Evolutionary Biology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/207504 |
作者单位 | NHGRI, Ctr Res Genom & Global Hlth, Bethesda, MD 20892 USA |
推荐引用方式 GB/T 7714 | Shriner, Daniel,Rotimi, Charles N.. Genetic history of Chad[J],2018,167(4):804-812. |
APA | Shriner, Daniel,&Rotimi, Charles N..(2018).Genetic history of Chad.AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY,167(4),804-812. |
MLA | Shriner, Daniel,et al."Genetic history of Chad".AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 167.4(2018):804-812. |
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