Table 1.
Observed Numbers of Boundary Intron Phase Combinations of Class 1 Domains (Encoded by One Exon) and Class 2 Domains (Encoded by Several Exons) in Human Genes
| Comb. | Domain class 1 | Domain class 2 | |||
| Domain | Domain family | Domain | Domain family | ||
| 0–0 | 29 | 8.5 | 176 | 51 | |
| 1–1 | 257 | 24.3 | 298 | 32.6 | |
| 2–2 | 2 | 0.2 | 30 | 8.7 | |
| 0–1 | 11 | 6.9 | 82 | 19.1 | |
| 0–2 | 9 | 4.4 | 74 | 23.7 | |
| 1–2 | 8 | 0.6 | 50 | 13.7 | |
| 1–0 | 6 | 3.1 | 103 | 21.9 | |
| 2–0 | 2 | 3 | 63 | 17.6 | |
| 2–1 | 21 | 4.9 | 48 | 7.6 | |
| Total | 345 | 56 | 924 | 196 | |
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↵Combination of flanking intron phases.
