Table 2. Tests for selection among codons of AL proteins using site models.
| Site-specific models | lnLa | Parameter estimations | ?2 b | Positively Selected Sites |
| M0 (one-ratio) | −5734.773 | ω = 0.091 | Not allowed | |
| M1a (nearly neutral) | −5673.941 | p0 = 0.8923,p1 = 0.1077ω0 = 0.0723, ω1 = 1.0000 | Not allowed | |
| M2a (positive selection) | −5673.941 | p0 = 0.8923,p1 = 0.1077,p2 = 0.0000ω0 = 0.0723, ω1 = 1.0000, ω2 = 33.741 | 0 | None |
| M3 (discrete) | −5607.533 | p0 = 0.5051,p1 = 0.3767,p2 = 0.1182ω0 = 0.0088, ω1 = 0.1350, ω2 = 0.4545 | 254.48(P<0.01) | None |
| M7 (beta) | −5607.627 | p = 0.3872,q = 3.0408 | Not allowed | |
| M8 (beta & ω) | −5607.630 | p0 = 0.99999,P = 0.3871,q = 3.0403(p1 = 0.00001), ω = 3.4633 | 0 | None |
a
The proportion of sites (p0, p1, etc.) estimated to have ω0, ω1, etc.
b
2(l1– l2).