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Fig. 5 | BMC Plant Biology

Fig. 5

From: Genome-wide identification of CCO gene family in cucumber (Cucumis sativus) and its comparative analysis with A. thaliana

Fig. 5

The ratio of mutations involving non-synonymous substitutions (Ka) to mutations involving synonymous substitutions (Ks) is shown as Ka/Ks. On the basis of Ks and Ka values, the gene duplication over selection and evolutionary pressure to paralogous pairings of cucumber CCO genes was determined. The red color indicates the duplication in Million years ago while the blue shows ka, ks and ka/ks ratio

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