Study

Khoe-San genomes reveal unique variation and confirm deepest population divergence in Homo sapiens

Study ID Alternative Stable ID Type
EGAS00001004459 Other

Study Description

The southern African indigenous Khoe-San populations harbor the most divergent lineages of all living peoples. Exploring their genomes is key to understanding deep human history. We sequenced 25 full genomes from five Khoe-San populations, revealing many novel variants, that 25% of variants are unique to the Khoe-San, and that the Khoe-San group harbors the greatest level of diversity across the globe. In line with previous studies, we found several gene-regions with extreme values in genome-wide distributions, potentially caused by natural selection early in the modern human lineage and more recent in time. These gene-regions included immunity-, sperm-, brain-, diet- and muscle-related genes. When accounting for recent admixture, all Khoe-San groups display genetic diversity approaching the levels in other African groups and a reduction in effective population size starting around 100,000 years ago. Hence, all human groups show a reduction in effective population size commencing around the time of the Out-of-Africa migrations, which coincides with changes in the paleoclimate ... (Show More)

Study Datasets 1 dataset.

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Dataset ID Description Technology Samples
EGAD00001006183
25 high coverage complete genome sequences of southern African Khoe-San individuals. Bam file format.
Illumina HiSeq 2000 25

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