|Results of the likelihood ratio tests for different models of codon evolution and estimated parameter values|
|M0 – one ω||−2975.2||454.8||ω = 0.53|
|M7 – nearly neutral with β||−2788.9||100.2|
|M8 – positive selection with β (ω0 ≤ 1, ω1 >1)||−2737.8||Best||p0 = 0.83, p1 = 0.17, ω1 = 2.92|
|M0 – one ω||−1154.5||68.5||ω = 0.74|
|M7 – nearly neutral with β||−1124||25.5|
|M8 – positive selection with β (ω0 ≤ 1, ω1 >1)||−1110.2||Best||p0 = 0.93, p1 = 0.07, ω1 = 5.26|
ω - dN/dS; nearly neutral with β - for all sites dN/dS ≤ 1 and the beta distribution approximates ω variation; positive selection - a proportion of sites evolves with dN/dS > 1; lnL - Log-likelihood value; ΔAIC - the difference between the value of the AIC of a given model and the best model; p0 - proportion of sites with dN/dS ≤ 1, p1 - proportion of positively selected sites (dN/dS > 1), ω1 - estimated value of ω for sites under positive selection.
Sepil et al.
Sepil et al. BMC Evolutionary Biology 2012 12:68 doi:10.1186/1471-2148-12-68