Summary of the identification and sequence analysis of the microsatellite DNA sequences. Red bars indicate the allele size range in the HGDP-CEPH data set, for which h and H are the smallest and largest allele sizes, respectively. Blue bars indicate the allele size range in the Marshfield primer data set, for which m and M are the smallest and largest allele sizes, respectively. The BLASTN fragment size in the human RefSeq database is denoted by x. A, B, and C refer to the repeat units of the different STR regions in a microsatellite sequence, with a, b, and c being the number of times they are repeated, respectively. N indicates a nucleotide not within an STR region, with n being the number of nucleotides separating two STR regions. For microsatellites with three STR regions, n1 and n2 respectively represent the numbers of nucleotides separating the first and second, and the second and third, STR regions. Key: ∧, and; ∨, or; ROS, range overlap score.