Table 1.
The number of SNPs present in each population and present in each commercial genotyping system
| Population | CEU | JPT+CHB | YRI |
| SNPs in HapMap | 3868157 | 3890416 | 3796934 |
| SNPs w/MAF >= 0.05 (%) | 2230515 (58%) | 2046163 (53%) | 2477182 (65%) |
| Common SNPs on Affy 100 K chip (%) | 91400 (79%) | 82995 (72%) | 91363 (79%) |
| Common SNPs on Affy 500 K chip (%) | 378415 (77%) | 346887 (70%) | 409849 (83%) |
| Common SNPs on Illumina 300 K chip (%) | 313265 (99%) | 251560 (79%) | 252678 (80%) |
| Common SNPs on Illumina 550 K chip (%) | 506543 (91%) | 425631 (77%) | 441884 (80%) |
The percentages given are the fraction of SNPs from the overall SNP set, and from each of the genotyping platforms, that are present with a MAF of at least 0.05 in each population