Table 1.
Proportion of adaptively evolving genes identified by two tests (P < 0.05).
| Gene category | MK | PAML | Expected overlap | Observed overlap |
|---|---|---|---|---|
| Drosophila | ||||
| Individual genes | 3.43% (186/5425) | 2.67% (145/5425) | 0.09% (4.97/5425) | 0.17% (9/5425) |
| Supergenesa | 56.0% (112/200) | 18.0% (36/200) | 10.1% | 10.0% (20/200) |
| Component genesb | 5.04% (158/3132) | 5.77% (60/1040) | 0.29% | 0.48% (3/619) |
| Arabidopsis | ||||
| Individual genes | 1.12% (145/12975) | 3.89% (505/12975) | 0.04% (5.55/12975) | 0.11% (14/12975) |
| Supergenes | 8.20% (41/500) | 25.6% (128/500) | 2.10% | 2.00% (10/500) |
| Component genes | 3.63% (38/1048) | 7.44% (246/3306) | 0.27% | 0.78% (2/258) |
aSupergenes are concatenations of 20–30 neighboring genes by physical location. See Table S1 for supergenes concatenated by gene function. bComponent genes are individual genes within supergenes that have passed the MK and/or PAML test.