Number of paralogous gene pairs with a high divergence rate of protein sequence and/or expression in the high and low morphological diversification groups.

a Proportion of paralogous gene pairs with a higher expression divergence but no protein divergence.
b Proportion of paralogous gene pairs with a higher protein divergence but no expression divergence.
c Null hypothesis is that the proportion of paralogous gene pairs with a higher expression divergence is the same proportion of paralogous gene pairs with a higher protein divergence.

a. 表达分歧更高但无蛋白质分歧的旁系同源基因对（paralogous gene pairs）占比
b. 蛋白质分歧更高但无表达分歧的旁系同源基因对占比
c. 零假设（null hypothesis）为：表达分歧更高的旁系同源基因对占比与蛋白质分歧更高的旁系同源基因对占比相同。