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Map of the LCT and MCM6 gene region and location of genotyped SNPs. (a) Distribution of 123 SNPs included in genotype analysis. (b) Map of the LCT and MCM6 gene region. (c) Map of the MCM6 gene. (d) Location of lactase persistence–associated SNPs within introns 9 and 13 of the MCM6 gene in African and European populations.
