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Table 5 Parameter estimates and LRT of MA1 vs. MA in DEF-like genes from Poales.

From: Positive selection and ancient duplications in the evolution of class B floral homeotic genes of orchids and grasses

Clade

Model

Estimate of parameters

Positive selection

L

Poales

(P1)

A

ω0 = 0.08303, f0 = 0.89319

ω1 = 1.00000, f1 = 0.03486

ω2a fore =936.29115, ω2a back =0.08303, f2a = 0.06925

ω2b fore =936.29115, ω2b back =1.00000, f2b = 0.00270

45 L 0.612

50 S 0.703

54 L 0.531

55 S 0.996**

77 I 0.556

82 A 0.588

86 K 0.583

89 N 0.991**

92 N 0.517

103 K 0.689

116 I 0.573

117 K 0.976*

126 L 0.625

132 L 0.993**

152 V 0.604

159 H 0.535

164 R 0.899←

167 E 0.742

170 N 0.931←

175 E 0.639

177 Y 0.996**

181 L 0.610

-9975.021057

 

A1

ω0 = 0.08196, f0 = 0.78512

ω1 = 1.00000, f1 = 0.03088

ω2a fore =1.00000, ω2a back =0.08196, f2a = 0.17704

ω2b fore =1.00000, ω2b back =1.00000, f2b = 0.00696

 

-9979.237754

LRT

2δ = 8.433394 df = 1 P = 0.0037

   

Poales

(P2)

A

ω0 = 0.08281, f0 = 0.86235

ω1 = 1.00000, f1 = 0.03283

ω2a fore =4.43236, ω2a back =0.08281, f2a = 0.10097

ω2b fore =4.43236, ω2b back =1.00000, f2b = 0.00384

14 S 0.813

42 E 0.747

44 S 0.846

50 S 0.993**

54 L 0.571

57 F 0.799

64 T 0.787

75 S 0.992**

78 N 0.706

81 S 0.788

103 K 0.893

128 E 0.892

142 N 0.821

154 N 0.736

171 Y 0.801

-9983.412368

 

A1

ω0 = 0.08278, f0 = 0.76740

ω1 = 1.00000, f1 = 0.02922

ω2a fore =1.00000, ω2a back =0.08278, f2a = 0.19592

ω2b fore =1.00000, ω2b back =1.00000, f2b = 0.00746

 

-9984.514801

LRT

2δ = 2.204866 df = 1 P = 0.1376

   

Poales

(P3)

A

ω0 = 0.08393, f0 = 0.95687

ω1 = 1.00000, f1 = 0.03593

ω2a fore =8.40943, ω2a back =0.08393, f2a = 0.00694

ω2b fore =8.40943, ω2b back =1.00000, f2b = 0.00026

33 T 0.517

183 L 0.954*

-9987.927062

 

A1

ω0 = 0.08401, f0 = 0.95276

ω1 = 1.00000, f1 = 0.03571

ω2a fore =1.00000, ω2a back =0.08401, f2a = 0.01111

ω2b fore =1.00000, ω2b back =1.00000, f2b = 0.00042

 

-9988.396587

LRT

2δ = 0.93905 df = 1 P = 0.3325

   
  1. The branches tested are those labeled with cursive fonts in Figure 3.