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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)