Significant Microsynteny with New Evolutionary Highlights Is Detected through Comparative Genomic Sequence Analysis of Maize CCCH IX Gene Subfamily

Figure 6

(a) Distribution of synonymous distance (Ks) between paralogous genes flanking duplicated CCCH IX genes in the three grass species. The histogram depicts the number of duplicate gene pairs (-axis) versus synonymous distance between pairs (-axis). CCCH IX blocks experienced whole-genome duplication (WGD) in the first stage of their evolution and large-scale duplication (LSD) in the second stage. (b) Ka/Ks ratios of duplicated CCCH IX genes and their flanking paralogs in the three grasses. The - and -axes denote the Ka/Ks ratio and synonymous distance for each pair, respectively.

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