Table 1.
Overview of analyzed genomes
| Number (Percentage) | Human | Mouse | Koala | Chicken | Zebrafish | Fugu | Worm | Arabidopsis |
|---|---|---|---|---|---|---|---|---|
| Protein-coding genes | 19,060 (100) | 21,959 (100) | 19,832 (100) | 16,711 (100) | 30,153 (100) | 21,383 (100) | 27,811 tr. (100) | 27,628 (100) |
| Intron density (average/median) | 10/7 | 9/6 | 8/6 | 10/7 | 9/6 | 9/6 | 6/5 | 4/3 |
| Intronless genes | 1024 (5) | 1478 (7) | 1466 (7) | 563 (3) | 1406 (5) | 989 (5) | 763 (3) | 5779 (21) |
| Genes with 1 intron | 1352 (7) | 2144 (10) | 2161 (11) | 1530 (9) | 2567 (9) | 1942 (9) | 2380 (9) | 4556 (16) |
| Genes with 2 introns | 1408 (7) | 1877 (9) | 1805 (9) | 1317 (8) | 2748 (9) | 1900 (9) | 3339 (12) | 3223 (12) |
| Genes with 3 and more introns | 15,276 (80) | 16,460 (75) | 14,400 (73) | 13,301 (80) | 23,432 (78) | 16,552 (77) | 21,329 (77) | 14,070 (51) |
| Relative position of the longest introna | ||||||||
| 1st tertile | 8873 (58) | 9368 (57) | 7965 (55) | 7284 (55) | 10,384 (44) | 8929 (54) | 8217 (39) | 6860 (49) |
| 2nd tertile | 3201 (21) | 3651 (22) | 3135 (22) | 2875 (22) | 5545 (24) | 3482 (21) | 6132 (29) | 3908 (28) |
| 3rd tertile | 3202 (21) | 3441 (21) | 3300 (23) | 3142 (24) | 7503 (32) | 4141 (25) | 6980 (33) | 3302 (23) |
tr Transcripts
aamong genes with 3 and more introns