Fig. 4
From: Codon usage of host-specific P genotypes (VP4) in group A rotavirus
Parity rule 2 (PR2) analysis of VP4 coding sequences for eight RVA P genotypes. A Human genotypes. B Porcine genotypes. C Zoonotic genotypes. A3/(A3 + U3) and G3/(G3 + C3) of fourfold degenerate codon families represented the ordinate and abscissa, respectively. In the centre of the graph, both coordinates had a value of 0.5, i.e. A = U and G = C. The dots represented VP4 sequences