Distribution of average synonymous substitution levels (Ks) between collinear gene pairs in intergenomic blocks and intragenomic blocks. The different colored peaks indicate the normal distribution of the Ks values of collinear gene pairs.
(a-d) Distribution of average synonymous substitution levels (Ks) between collinear gene pairs in intragenomic blocks.
(e-h) Correction to the Ks distribution and the time of occurrence of key evolutionary events.
(i-j) Distribution of average synonymous substitution levels (Ks) between collinear gene pairs in intergenomic blocks.