Specie

No. of codons

dS

dN

dN/dS

Z-score

P-value

Goat

340

2.28

2.42

1.06

10.77

0.00

Sheep

353

1.46

1.41

0.97

−1.232

1.00

Cattle

226

2.53

2.62

1.04

11.83

0.00

Swine

310

1.13

1.36

1.20

6.39

0.00

Chicken

347

0.70

0.77

1.10

7.85

0.00