Figure 5.
Comparison of coding SNP density in modern Arabidopsis populations among different function-divergence groups. Black bars indicate means of coding SNP density, with error bars indicating se. Mann-Whitney U tests show that the SNP density of gene pairs in the partially diverged group is significantly lower than that of fully diverged and conserved groups (P = 2.619e-11 and P = 0.000349). There is no significant difference between the fully diverged and conserved groups. The red line indicates the genome-wide average of coding SNP density. [See online article for color version of this figure.]