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Table 1 Selection pressure analysis of sites in the coding region of ABCG2 genes

From: Molecular evolution of the ATP-binding cassette subfamily G member 2 gene subfamily and its paralogs in birds

Model code lnL Parameters Number of positive selection sites
M0 (one ratio) −19,249.376879 ω = 0.25797 None
M1a (nearly neutral) −18,586.64149 P0 = 0.70173,P1 = 0.29827
ω0 = 0.07200, ω1 = 1
Not allowed
M2a (positive selection) −18,561.41171 P0 = 0.69472,P1 = 0.27126,P2 = 0.03402 ω0 = 0.07356,ω1 = 1,ω2 = 2.61739 13
M3 (discrete) −11,953.59808 P0 = 0.28795,P1 = 0.18745,P2 = 0.27619 ω0 = 0.03433,ω1 = 0.03433,ω2 = 0.03433 Not allowed
M7 (beta) −18,532.88959 p = 0.24865,q = 0.61421(p1 = 0.1),
ω = 0.00101
Not allowed
M8 (beta&ω > 1) −18,489.18864 p0 = 0.9112692,p = 0.33179,q = 1.27694, (p1 = 0.08874) ω = 1.77811 56
  1. Note: lnL refers to the logarithm of the maximum likelihood (ML)