nt | FBgn | apomorphic introns | Properties typical for intron sliding | Properties typical for tandem duplication | |||||
---|---|---|---|---|---|---|---|---|---|
No intermediate, intron-less state in the tree | Multiple-of-three NIP distances that made a stepwise intron shift possible | Cryptic splice sites, occurring in NIP distance and supported by amino acid conservation | One-sided shifts or GYRGYR/NAGNAGs in some species | Significant sequence similarity between introns of both positions | Proto-splice site (AG/GY) | plesiomorphic introns not identifiable | |||
probably migrated intron positions | |||||||||
3 | 3607 | 118-1 | x | x | x | ||||
3 | 32261 | 55-0 | x | x | x | ||||
3 | 37757 | 616-1 | x | x | x | x | |||
6 | 19809 | 255-0 | x | x | x | ||||
6 | 35879 | 105-1 | x | x | x | x | |||
9 | 32821 | 1200-0 | x | x | x | ||||
9 | 34221 | x | x | x | x | ||||
12 | 33734 | 419-0, 423-0 | x | x | x | ||||
15 | 1124 | 124-0 | x | x | x | ||||
introns probably gained by tandem (exon) duplication | |||||||||
10 | 30661 | x | |||||||
21 | 29747 | x | x | 2x | x | ||||
30 | 38300 | x | x | 2x | x | ||||
30 | 50101 | 251-0 | x | x | x | ||||
31 | 2526 | x | x | ||||||
NIPs of unknown origin | |||||||||
2 | 31216 | 1927-1, 1928-0 | x | x | |||||
2 | 36142 | 456-0, 456-2 | x | x | |||||
3 | 15572 | 4-2 | x | x | |||||
3 | 32087 | 19-1 | x | x | |||||
3 | 32504 | x | x | ||||||
3 | 52081 | x | x | x | |||||
5 | 46689 | 16-2 | x | x | |||||
6 | 31395 | x | x | x | |||||
9 | 38302 | 65-2 | x | x | |||||
14 | 35965 | 44-0 | x | ||||||
16 | 33686 | 53-2, 59-0 | x | x | |||||
21 | 30055 | x | x | x | |||||
22 | 32517 | 221-0 | x | ||||||
23 | 33247 | 45-2 | x | ||||||
24 | 34793 | 29-0 | x | x | |||||
27 | 1185 | x | x | ||||||
28 | 31773 | 164-1 | x | ||||||
∑ | 31 | 25 | 27 | 21 | 5 | 5 | 3 | 7 | 11 |