SNP discovery in Indian populations. (a) Population samples. The number of individuals sampled from each Indian population is shown. (b) The number of SNPs found in HapMap non-Indian and Indian populations. (c) The number of SNPs found in south Indian, HapMap GIH, and HapMap non-Indian populations. HapMap non-Indian populations include CEU, CHB, CHD, JPT, LWK, TSI, and YRI. South Indian populations include Brahmin, Irula, Mala/Madiga, and Yadava.