TABLE 5.
Molecular distances between sister species pairs in the Drosophila melanogaster subgroup
| Sp pairs | r | G | Gen dir | WSR | |||
|---|---|---|---|---|---|---|---|
| mel | sim | ||||||
| Nontelomeric | Sil | 229.1 | 143.7 | 1.6 | 19.7*** | 8/1 | 0.0078* |
| Near telomeric | 234.4 | 187.9 | 1.2 | 5.1* | 11/3 | 0.030* | |
| Nontelomeric | Rep | 22.7 | 27.0 | −1.2 | 0.4 | 4/4 | 1.00 |
| Near telomeric | 94.5 | 65.6 | 1.4 | 5.2* | 9/4 | 0.27 | |
| Nontelomeric | Int | 41.8 | 46.8 | −1.1 | 0.3 | 3/6 | 0.42 |
| Near telomeric | 93.9 | 81.7 | 1.1 | 0.9 | 6/4 | 0.37 | |
| tei | yak | ||||||
| Nontelomeric | Sil | 121.0 | 222.5 | −1.8 | 30.4*** | 0/9 | 0.0039** |
| Near telomeric | 161.6 | 228.3 | −1.4 | 11.5** | 3/11 | 0.030* | |
| yak-TRIMCU | 138.0 | 174.9 | −1.3 | 4.3* | 3/8 | 0.12 | |
| Nontelomeric | Rep | 26.8 | 19.4 | 1.4 | 1.2 | 3/2 | 0.25 |
| Near telomeric | 35.4 | 52.0 | −1.5 | 3.2 | 2/11 | 0.032* | |
| yak-TRIMCU | 32.1 | 39.3 | −1.2 | 0.7 | 2/8 | 0.083 | |
| Nontelomeric | Int | 44.5 | 70.0 | −1.6 | 5.7* | 4/5 | 0.50 |
| Near telomeric | 59.2 | 118.9 | −2.0 | 20.3*** | 0/10 | 0.0020** | |
| yak-TRIMCU | 50.4 | 102.5 | −2.0 | 18.1*** | 0/7 | 0.016* | |
| ere | ore | ||||||
| Nontelomeric | Sil | 176.1 | 181.5 | −1.0 | 0.1 | 3/6 | 0.65 |
| Near telomeric | 189.1 | 302.4 | −1.6 | 26.3*** | 4/10 | 0.035* | |
| ore-TRIMCU | 63.8 | 173.9 | −2.7 | 52.8*** | 0/6 | 0.031* | |
| Nontelomeric | Rep | 40.3 | 56.4 | −1.4 | 2.7 | 3/5 | 0.36 |
| Near telomeric | 62.6 | 102.5 | −1.6 | 9.7** | 4/10 | 0.15 | |
| ore-TRIMCU | 18.2 | 36.0 | −2.0 | 5.9* | 1/5 | 0.093 | |
| Nontelomeric | Int | 67.8 | 47.1 | 1.4 | 3.7 | 7/2 | 0.039* |
| Near telomeric | 80.4 | 98.1 | −1.2 | 1.7 | 4/6 | 0.23 | |
| ore-TRIMCU | 41.1 | 38.3 | 1.1 | 0.1 | 1/1 | 1.00 | |
Total counts of silent (Sil), replacement (Rep), and intronic (Int) changes from the near-telomeric loci (6391 codons), nontelomeric loci (4906 codons), and near-telomeric regions of increasing MCU (TRIMCU) are shown. Total lengths of aligned introns are 1348, 2422, 1854, and 733 bp for nontelomeric, near-telomeric, yak-TRIMCU, and ore-TRIMCU loci, respectively. Sp pairs, sister species pairs; r, ratio of changes between two sister species; the larger number of changes is used as the numerator in each comparison. Negative signs on the ratios indicate higher values in the right-column species (i.e., sim, yak, and ore) than in the left-column species (e.g., r = mel/sim if mel > sim and r = −sim/mel if sim > mel). The G-values of goodness-of-fit tests for the expected equal numbers of changes at equilibrium are shown. Gene dir represents the number of genes that show positive/negative d. Probabilities of Wilcoxon signed-rank test (WSR) are given. *P < 0.05, **P < 0.005, ***P < 0.0005. Definitions of TRIMCU regions and abbreviations for lineages are given in the Table 2 legend.