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Table 2 CODEML analyses of selective pattern on the TAS1R1 in catarrhine primates

From: Differentiated adaptive evolution, episodic relaxation of selective constraints, and pseudogenization of umami and sweet taste genes TAS1Rs in catarrhine primates

Models

lnL

Compared

2ΔLnL

P-value

Parameter estimates

Branch model

     

M0:one-ratio

−6347.5127

   

ω = 0.2486

M1:free-ratio

−6316.3339

M0 vs. M1

62.3576

p > 0.05

 

Foreground branch: all lineages of Cercopithecidae except for the ancestral branch

H1: ω0, ω1

−6344.8700

M0 vs. H1

5.2854

p < 0.05

ω0 = 0.3112, ω1 = 0.1981

H0: ω0, ω1 = 1

−6412.3663

H0 vs. H1

134.9926

p < 0.01

ω0 = 0.3149, ω1 = 1.0000

Foreground branch: ancestral of Mandrillus, Cercocebus, Papio, Lophocebus, Theropithecus and Macaca

H1: ω0, ω1

−6343.4866

M0 vs. H1

8.0522

p < 0.01

ω0 = 0.2419, ω1 = +∞

Foreground branch: ancestral of Pan, Homo and Gorilla

H1: ω0, ω1

−6345.0477

M0 vs. H1

4.9300

p < 0.05

ω0 = 0.2379, ω1 = 0.7772

H0: ω0, ω1 = 1

−6345.1667

H0 vs. H1

0.2380

p > 0.05

ω0 = 0.2379, ω1 = 1.0000

Site model

     

M1a

−6316.1817

   

p0 = 0.8312, p1 = 0.1688, ω0 = 0.0859, ω1 = 1.0000

M2a

−6310.5399

M1a vs. M2a

11.2836

p < 0.01

p0 = 0.8708, p1 = 0.1159, p2 = 0.0133, ω0 = 0.1137, ω1 = 1.0000, ω2 = 4.7335

M8a

−6316.2094

   

p0 = 0.8318( p1 = 0.1682), p = 9.4660, q = 99.0000, ω = 1.0000

M8

−6310.7199

M8a vs. M8

10.9790

p < 0.01

p0 = 0.9794( p1 = 0.0206), p = 0.4478, q = 1.7622, ω = 4.0147

Branch-site model

    

Lineages of Cercopithecidae

    

Null

−6316.1817

   

p0 = 0.8312, p1 = 1688 p2a = 0.0000, p2b = 0.0000 ω0 = 0.0859, ω1 = 1.0000 ω2 = 1.0000

Alternative

−6308.6453

 

15.0728

p < 0.01

p0 = 0.8384, p1 = 1583 p2a = 0.0027, p2b = 0.0005 ω0 = 0.0936, ω1 = 1.0000 ω2 = 13.4610

  1. +∞ means infinite, and in this case d S =0 thus ω (d N /d S )= +∞.
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Frontiers in Zoology

ISSN: 1742-9994