Selection and Exon Structure of Genes for Study
| Number of multiple-exon genes selected for study | 347 |
| Number of exons | 3240 |
| Number of exon junctions | 2893 |
| Mean exon length | 254 bp |
| Minimum exon length observed | 8 bp |
| Maximum exon length observed | 7660 bp |
| Maximum number of exons observed in one gene | 54 |
[i] We selected 347 multiple-exon genes of a total 545 genes present on chromosome 22 for study. Those removed included 134 single-exon genes and 64 double-exon genes that could not be assessed for exon skipping.