Scanning for signatures of geographically restricted selection based on population genomics analysis
- Cite this article as:
- Deng, L., Tang, X., Kang, J. et al. CHINESE SCI BULL (2007) 52: 2649. doi:10.1007/s11434-007-0400-0
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Natural selection, as the driving force of human evolution, has direct impact on population differentiation. However, it is still unclear to what extent the genetic differentiation has been caused by natural selection. To explore this question, we performed a genome-wide scan with single nucleotide polymorphism (SNP) data from the International HapMap Project. Single locus FST analysis was applied to assess the frequency difference among populations in autosomes. Based on the empirical distribution of FST, we identified 12669 SNPs correlating to population differentiation and 1853 candidate genes subjected to geographic restricted natural selection. Further interpretation of gene ontogeny revealed 121 categories of biological process with the enrichments of candidate genes. Our results suggest that natural selection may play an important role in human population differentiation. In addition, our analysis provides new clues as well as research methods for our understanding of population differentiation and natural selection.