Fig. 7.

Comparison ($\theta$) of the mean dinucleotide variability distribution for (A) genes with MAE vs. BAE and (B) genes expressed specifically in nsc or asl vs. genes expressed in both cell types. Results are shown for the 5′-proximal (blue) and 3′-proximal (red) regions (Fig. 5 shows gene neighborhoods). *P value < 10⁻²; **P < 10⁻⁵; ****P < 10⁻¹⁵ (Mann–Whitney U rank test).