Figure 1. Nucleotide substitution rates and ecological properties of mammalian RNA viruses.
Log scale mean substitution rate (log10(nucleotide substitutions/site/year, NS/S/Y)) estimates for different target cells (A and B), transmission routes (C and D), infection modes (E and F), and host ranges (G and H). Plots on the left show rates based on structural genes, while the plots on the right show those of non-structural genes. Each black bar indicates the mean of each level, and the levels of each variable are sorted by increasing mean substitution rate. Sources of the rates are given in Table S1.