Positive Selection and the Evolution of izumo Genes in Mammals
Table 2
Evidence of positive selection at izumo genes within three major groups of mammals.
Group
Gene
(M8-M7)
;
(M8-M8a)
Primates
izumo1
9; 5
0.66; 0.99
1.94; 0.62
izumo2
9; 5
0.72; 0.81
6.79*; 0.15
0.04; 5.39
6.10*
izumo3
5
0.73
9.03*
0.36; 2.36
8.91**
izumo4
9; 5
0.73; 0.76
4.19; 3.43
Glires
izumo1
7; 4
0.46; 0.86
1.33; 1.17
izumo2
6; 4
0.83; 0.99
4.33; 3.64
izumo3
4
0.91
4.82
izumo4
5; 4
0.76; 0.83
10.99**; 4.57
0.08; 1.48
0.94
Laurasiatheria
izumo1
7; 4
0.77; 0.82
39.75***; 7.03*
0.24; 2.57
30.22***; 5.92*
izumo2
6; 4
0.48; 0.76
0.31; 0.88
izumo3
4
0.68
4.85
izumo4
6; 4
0.66; 0.79
0.00; 0.00
number of species included; : proportion of sequence analyzed after removing gaps; : the difference in likelihood estimates from different models of selection (see methods); : proportion of codon sites under positive selection; : d
N/dS per codon for sites under positive selection. *; **; ***.
