Table 4 Parameter estimates and Log-likelihood values, under models of variable ω among sites, and selected sites under positive selection in cluster B of duplicated zebra finch β-defensin genes.
Model | np | Parameters | ML | dN/dS | Amino acid positions under positive selection (BEB, > 0,95*. > 0.99**) |
|---|---|---|---|---|---|
M1a (nearly neutral, ω = 1 or < 1) | 2 | p0 = 0.39, ω0 = 0 p1 = 0.61, ω1 = 1 | -966.38 | 0.61 | |
M2a (selection, allows ω > 1) | 4 | p0 = 0.38, ω0 = 0 p1 = 0.27, ω1 = 1 p2 = 0.35, ω2 = 3.67 | -954.24 | 1.56 | 24**, 25**, 35*, 37*, 43*, 45**, 53*, 56** |
M8a (β dist and ω = 1) | 4 | p0 = 0.39 p = 0.005 q = 99.00 p1 = 0.61, w = 1.00 | -966.38 | 0.61 | |
M7 (β dist and ω 0-1) | 2 | p = 0.012, q = 0.005 | -967.36 | 0.7 | |
M8 (β dist and ω > < 1) | 4 | p0 = 0.64, p = 0.005, q = 0.008, p1 = 0.36, ω = 3.65 | -957.15 | 1.57 | 23*, 24**, 25**, 27*, 34*, 35**, 37**, 43**, 45**, 46*, 49*, 53**, 54*, 56** |