Table 4.
Statistics of AS events for the orthologous gene subset (Event Level Analysis).
| Type of alternative splicing event | Chicken | Human | Mouse |
| Transcriptional Start Site | 7259 (21%) | 22345 (19%) | 17240 (23%) |
| Alternative Initiation Exons | 4416 (13%) | 13281 (11%) | 11019 (14%) |
| Transcriptional Termination Site | 7272 (22%) | 22344 (19%) | 17325 (23%) |
| Alternative Termination Exons | 4588 (14%) | 13205 (11%) | 11114 (15%) |
| Alternative Acceptor | 806 (2%) | 5696 (5%) | 2772 (4%) |
| Alternative Donor | 870 (3%) | 5888 (5%) | 3012 (4%) |
| Cassette Exons | 6998 (21%) | 31158 (27%) | 12094 (16%) |
| Intron Retention | 1000 (3%) | 2517 (2%) | 1701 (2%) |
| Mutually Exclusive | 223 (0.6%) | 276 (0.2%) | 126 (0.2%) |
| Total events | 33432 | 116710 | 76313 |