Table 1.

Allele Frequency Distribution of SNPs

SNP Current data Previously reported data
Total number26,530 502 
Uncommon1,342 (5.1%)30 (6.0%)
Common ≥1 population21,101 (79.5%)385 (76.7%)
Common ≥2 populations15,029 (56.6%)263 (52.4%)
Common in all 3 populations7,908 (29.8%)135 (27.0%)

[i] A common SNP is defined in which the minor allele frequency is ≥20%. This frequency threshold was used so that the current data could be compared with previously reported estimates of allele frequency (Marth et al. 2001).