Table 2.

Bivariate Correlations (Data Set 2)

	Position		ωa		dNa		dSa		ENC		% Used Codons		Expression Level		Expression Breadth		Connectivity		Protein Length
	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P	ρ	P
Position	—	—	−0.304	0.090	−0.441	0.023*	−0.164	0.477	−0.050	0.828	0.110	0.636	0.032	0.894	0.011	0.962	0.040	0.862	−0.553	0.009**
ωa	−0.136	0.279	—	—	0.844	<0.001***	−0.190	0.410	0.353	0.116	−0.183	0.427	−0.355	0.125	−0.029	0.905	−0.173	0.453	0.230	0.316
dNa	−0.294	0.098	0.914	<0.001***	—	—	0.325	0.151	−0.005	0.982	−0.522	0.015*	−0.277	0.238	−0.156	0.511	−0.150	0.517	0.413	0.063
dSa	−0.229	0.318	−0.105	0.650	0.229	0.319	—	—	−0.714	<0.001***	−0.610	0.003**	0.087	0.715	−0.284	0.225	0.129	0.578	0.322	0.154
ENC	−0.107	0.646	0.027	0.907	−0.068	0.771	−0.473	0.030*	—	—	0.487	0.025*	−0.096	0.686	0.340	0.142	0.062	0.788	0.039	0.867
% Used  codons	0.144	0.532	0.200	0.385	0.004	0.987	−0.558	0.009**	0.542	0.011*	—	—	0.060	0.801	0.198	0.403	0.003	0.991	−0.156	0.500
Expression  level	0.032	0.894	−0.423	0.063	−0.337	0.146	0.280	0.232	−0.026	0.915	−0.232	0.326	—	—	0.762	<0.001***	0.273	0.243	−0.389	0.090
Expression  breadth	0.011	0.962	−0.274	0.242	−0.252	0.283	−0.014	0.952	0.337	0.146	−0.031	0.896	0.762	<0.001***	—	—	0.161	0.498	−0.224	0.342
Connectivity	0.040	0.862	−0.291	0.201	−0.175	0.448	0.367	0.101	0.183	0.426	−0.369	0.100	0.273	0.243	0.161	0.498	—	—	−0.291	0.200
Protein length	−0.553	0.009*	0.292	0.199	0.438	0.047*	0.261	0.253	−0.014	0.951	0.195	0.397	−0.389	0.090	−0.224	0.342	−0.291	0.200	—	—

Note.—Values below and above the principal diagonal are based on analyses using all six species or excluding Ornithorhynchus anatinus, respectively. All correlations are based on n = 21 observations except those involving gene expression level and breadth (n = 20). Two-tailed P values are provided except for the correlations between pathway position and ω and d_N (one tailed).

^aValues calculated under the M0 model.

*P < 0.05, **P < 0.01, and ***P < 0.001.