Table 4 Pearson correlation coefficients and their statistical significance between d_N/d_S for different substitution categories and body mass for genes with low and high GC content, and for genes located in microchromosomes or macrochromosomes. Significant correlations are highlighted in italics

0.03

8.54 × 10⁻¹

0.53

1.22 × 10 ⁻⁴

− 0.21

1.53 × 10⁻¹

0.25

9.43 × 10⁻²

0.13

3.83 × 10⁻¹

0.52

1.93 × 10 ⁻⁴

− 0.32

2.73 × 10 ⁻²

0.31

3.16 × 10 ⁻²

0.14

3.45 × 10⁻¹

0.55

7.49 × 10 ⁻⁵

− 0.26

7.79 × 10⁻²

0.40

5.42 × 10 ⁻³

0.01

9.27 × 10⁻¹

0.47

7.65 × 10 ⁻⁴

− 0.27

6.18 × 10⁻²

0.17

2.61 × 10⁻¹