Distribution of the Number of Alternative Superstructures per Gene
| No. of superstructures | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ≧9 |
| Percent of genes | 65.6 | 18.6 | 4.6 | 5.4 | 1.3 | 1.5 | 0.5 | 1.0 | 1.5 |
| No. of genes | 259 | 71 | 18 | 21 | 5 | 6 | 2 | 4 | 6 |
[i] Column 1 corresponds to genes without alternative splicing.