Figure 3.

Ka/Ks ratio analysis. Frequency distributions of Ka/Ks ratios were analysed using the best matched pairs among six dicot plants (A and C) or four monocot plants (B and D). (A) and (B) show the data analysed from the GST_N regions. (C) and (D) show the analysis from the GST_C regions. The average Ka, Ks and their ratios in monocot and dicot pairs were indicated in (E) for GST_N and in (F) for GST_C. Asterisks indicate significant differences between monocot and dicot plants at P < 0.05 (*) and P < 0.01 (**) by t-test, respectively. The Ka/Ks plots for the GST_C versus GST_N domains of the sorghum Tau members are shown in (G).