Data set | 2ΔlnL | df | P-value | Proportion of sites with ω > 1 (average ω for these sites) | Positively selected codonsa |
---|---|---|---|---|---|
All vertebrates ( n = 77) |  |  |  |  |  |
 M1a vs. M2a | 15.22 | 2 | P = 0.0005 | 0.017 (ω = 2.0) |  |
 M7 vs. M8 | 34.89 | 2 | P < 0.0001 | 0.050 (ω = 1.3) | 97**, 98*, 104*, 286* |
 M0 vs. free ratios | 510.67 | 142 | P < 0.0001 |  |  |
Mammals ( n = 55) |  |  |  |  |  |
 M1a vs. M2a | 31.27 | 2 | P < 0.0001 | 0.027 (ω = 2.3) |  |
 M7 vs. M8 | 47.39 | 2 | P < 0.0001 | 0.066 (ω = 1.6) | 97**, 98*, 104*, 214*, 286** |
 M0 vs. free ratios | 265.71 | 100 | P < 0.0001 |  |  |
Primates ( n = 17) |  |  |  |  |  |
 M1a vs. M2a | 0 | 2 | P = 1.0 | none |  |
 M7 vs. M8 | 0 | 2 | P = 1.0 | none |  |
 M0 vs. free ratios | 36.45 | 28 | P = 0.13 |  |  |