Table 1.

Output of a Reduced Best-Fit GLM with Differential Gene Expression (|Log₂(a₁/a₂)|) As the Response Variable and the Following Predictable Variables: Genomic Compartment and Various Degeneration Traits, That Is, Nonsynonymous Substitution Rate (dN), TE Insertions, Protein Length, Intron Content, and GC Content

Explanatory Variables and Interaction Terms	GLM Model Output Parameter
	Wald Chi-Square	Degree of Freedom (df)	P-value	Regression Coefficient
(Intercept)	496.78	1	<0.001	NA
Compartment	20.151	3	<0.001	NA
dN	13.21	1	<0.001	5.081
TE insertions	8.405	1	0.004	0.044
Protein length	0.41	1	0.522	10.612
Intron content	10.209	1	0.001	0.768
GC content	4.233	1	0.040	0.499
Compartment * Protein length	24.662	3	<0.001	NA
dN * Protein length	13.36	1	<0.001	−50.726
TE insertions * Protein Length	8.398	1	0.004	−0.37
GC content * Protein length	10.801	1	0.001	−3.962

Note.—P-values <0.05 are in bold. NA, not applicable.