Table 3.

Partial Correlation Analyses Based on Kendall’s τ to Investigate the Effect of Variation in Various Covariates on the Correlation between the Two Variables of Interest

Case	Variables	Covariates	Kendall’s τ
1	ω, τ	GC3	0.047***
2	ω, τ	GC3, read depth	0.033***
3	ω, intron length	GC3, chromosome size	−0.031***
4	ω, intron number	GC3, chromosome size	−0.098***
5	ω, protein length	GC3, chromosome size	−0.028**
6	ds, chromosome size	GC3	−0.031***
7	ω, genomic locationa	GC3, gene density, τ, intron number, protein length	0.02*1
8	ω, genomic locationb	GC3, gene density, τ, intron number, protein length	0.023NS
9	ω,c genomic locationa	GC3, gene density, τ, intron number, protein length	0.075***
10	p,d genomic locationa	GC3, gene density, τ, intron number, protein length	0.047***
11	Δln L,e genomic locationa	GC3, gene density, τ, intron number, protein length	−0.13*2

Note.—NS, not significant.

^aOuter parts of macrochromosomes and microchromosomes versus inner parts of macrochromosomes.

^bOuter parts of macrochromosomes versus microchromosomes.

^cω at nonneutral sites (nearly neutral model M1a, fig. 3).

^dProportion of neutral sites (nearly neutral model M1a, fig. 3).

^eLog-likelihood difference (model M7 vs. M8, test for positive selection, genes with P <1.0).

***$P\le 0.001$.

**$P\le 0.01$.

*¹P = 0.032.

*²P = 0.027

^NSP > 0.05.