Table 2.
Observed numbers of nucleotide substitutions along the neo-X and neo-Y chromosomes at different classes of sites (excluding CycB and exu1)
|
|
neo-X |
neo-Y |
Ratio |
|---|---|---|---|
| Synonymous substitutions | |||
| Total | 237 | 342 | 1.44* |
| P → U | 108 | 193 | 1.79* |
| U → P | 42 | 42 | 1 |
| Neutral | 87 | 107 | 1.23 |
| Amino acid changes | 80 | 364 | 4.6* |
| Noncoding substitutions | |||
| Total | 144 | 248 | 1.72* |
| Introns | 107 | 174 | 1.63 |
| 5′ and 3′ flanking regions
|
37
|
75
|
2.03*
|
-
↵* p < 0.05 compared to neutral synonymous substitutions, using a Fisher's exact test
