To mimic the planned 1000 Genomes Gambian dataset, we randomly allocated 100 GMB individuals to a reference panel. We also formed a reference panel from 100 randomly chosen GHN individuals. Ghana is located between Nigeria (the source of the HapMap YRI panel) and the Gambia on the Atlantic coast of Africa, so this panel contains reference haplotypes sampled nearer to the location of interest than those in the HapMap data.
