Figure 5From: Codon usage in vertebrates is associated with a low risk of acquiring nonsense mutationsRelative codon usage for amino acids that can be encoded by codons of various ω (○ for codons with ω = 0; ● for codons with ω = 1 or ω = 2). The usage of these codons is shown relative to a random codon usage of 1.0 (dotted line).Back to article page