Research Article

A Comparison of Synonymous Codon Usage Bias Patterns in DNA and RNA Virus Genomes: Quantifying the Relative Importance of Mutational Pressure and Natural Selection

Figure 4

The relationship between GC12 and GC3s of DNA (a) and RNA (b) virus genomes. The fitted regression line has the formula as + for DNA viruses and + for RNA viruses, respectively.
406342.fig.004a
(a)
406342.fig.004b
(b)