Table 3. Frequency of SNPs on the Y and other representative human chromosomes.
| Total SNPs | SNPs per 10,000 bp | ||||||
| Chromosome | Size (bp) | db SNP | Hapmap (CEU) | 1000 Genomes* | db SNP | Hapmap (CEU) | 1000 Genomes* |
| Chr:22 | 49691432 | 399169 | 55941 | 251649 | 80.33 | 11.258 | 50.642 |
| Chr:21 | 46944323 | 369905 | 50983 | 219897 | 78.797 | 10.86 | 46.842 |
| Chr:20 | 62435964 | 623847 | 121069 | 396676 | 99.918 | 19.391 | 63.533 |
| Chr:X | 154913754 | 847225 | 122601 | 556264 | 54.69 | 7.914 | 35.908 |
| Chr:Y | 57772594 | 50993 | 722 | 326 | 8.827 | 0.125 | 0.056 |
| Genes on the Chr Y | 2173359 | 171 | 85 | 244 | 0.787 | 0.391 | 1.123 |
Number of SNPs is given for each of the chromosomes shown, according to data in dbSNP, HapMap, or 1000 Genomes.
*1000 Genomes Pilot Release 7.