From: CpG island density and its correlations with genomic features in mammalian genomes
 | Genome | CpG islands | |||||||
---|---|---|---|---|---|---|---|---|---|
Species | Length (Mb)* | Number of chromosome pairs | GC content (%) | ObsCpG/ExpCpG | Number of CGIs | CGI density (/Mb) | Avgerage length (bp) | GC content (%) | ObsCpG/ExpCpG |
Chicken†| 985 | 39 | 41.4 | 0.248 | 22,623 | 23.0 | 1,098 | 60.0 | 0.844 |
   Microchromosome | 167 | 20 | 45.7 | 0.305 | 8,634 | 51.7 | 1,040 | 60.4 | 0.810 |
   Macrochromosome | 674 | 6 | 40.0 | 0.219 | 10,125 | 15.0 | 1,138 | 59.6 | 0.863 |
Lizard | 1,742 | 18 | 40.4 | 0.296 | 45,171 | 25.9 | 899 | 56.8 | 0.728 |
Tetraodon | 187 | 21 | 45.9 | 0.601 | 30,175 | 161.6 | 1,013 | 56.7 | 0.782 |
Stickleback | 391 | 21 | 44.5 | 0.662 | 61,768 | 157.8 | 824 | 55.8 | 0.842 |
Medaka | 582 | 24 | 40.1 | 0.479 | 21,522 | 37.0 | 746 | 55.8 | 0.784 |
Zebrafish | 1,524 | 25 | 36.5 | 0.531 | 22,392 | 14.7 | 1,162 | 57.0 | 0.869 |
Fugu | 351 | 22 | 45.5 | 0.565 | 47,251 | 134.5 | 872 | 56.0 | 0.808 |