Neutrality plots of microsporidian genomes.

<p>Individual genes are plotted based on the mean GC content in the first and second codon position (P₁₂) versus the GC content of the third codon position (P₃). Regression lines and Spearman’s rank correlation coefficients (ρ) are shown, with the asterisk (*) denoting <i>P</i>-values < 0.01.