Figure 3. .
Clustering of SNPs showing large FST between Pima and Mayan AMIs on chromosome 6. The ordinate shows the number of markers with Pima/EUR FST>0.35 in each 2 cM (above abscissa) and the frequency of all SNPs (below abscissa). The abscissa shows the chromosome position in cM. The results are from analysis of genotypes with use of the 317K Illumina array. The same peak is also observed in the 100K gene-enriched array after removal of all SNPs overlapping with the 317K Illumina array. The peak could not be explained by the density of SNPs on the genetic map, which averaged 122 SNPs/cM on chromosome 6 and was 196 SNPs/cM in the HLA region.