Comparison of Frequencies of Synonymous and Nonsynonymous Changes at Different Exonic Locations
| Synonymous changes | Nonsynonymous changes | |
| Spliced genes | ||
| 5′ end | ||
| pos. 1–125 | 2596 | 2632 |
| pos. 126–250 | 384 | 460 |
| 3′ end | ||
| pos. 1–125 | 2525 | 2370 |
| pos. 126–250 | 242 | 242 |
| Single-exon genes | ||
| 5′ and 3′ ends | ||
| pos. 1–250 | 68 | 105 |