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Correlation between dN and dS for the Geraniaceae (red triangles) and other angiosperms (black circles). Spearman's rank correlation rho (rS) is significant (P < 0.001) for both Geraniaceae and angiosperms. Correlation coefficients were compared by using Fisher's Z transformation to show that there is a stronger correlation between dN and dS in the other angiosperms compared with Geraniaceae (P < 0.001).
