| Number of genes analyzed | Number and fraction (in parentheses) of genes involved in overlaps | Chi-square test value (when compared to human) | Number of overlaps | Nested genes | Exon/exon overlaps (NATs) * | Intron/exon overlaps* | |
---|---|---|---|---|---|---|---|---|
 |  |  |  |  |  | Total | CDS involved |  |
Human | 22,291 | 2,978 (13.4) | NA | 1,766 | 972 | 634 | 417 | 160 |
Chimpanzee | 21,506 | 2,219 (10.3) | 73.0888 | 1,276 | 665 | 479 | 317 | 132 |
Mouse | 25,383 | 3,456 (13.6) | 5.0750 | 2,053 | 1,071 | 819 | 565 | 163 |
Rat | 22,159 | 1,080 (4.9) | 895.1585 | 607 | 458 | 102 | 100 | 47 |
Chicken | 17,709 | 1,960 (11.1) | 32.2585 | 1,135 | 474 | 511 | 471 | 150 |
Fugu | 20,796 | 993 (4.8) | 880.5199 | 556 | 174 | 290 | 290 | 92 |
Zebrafish | 23,524 | 1,625 (6.9) | 472.4534 | 1,026 | 767 | 98 | 85 | 161 |