Fig. 7From: Phylogeny and adaptive evolution of subgenus Rhizirideum (Amaryllidaceae, Allium) based on plastid genomesComparative analysis of codon usage bias in species of five sections in A. subg. Rhizirideum. CAI, codon adaptation index; CBI, codon bias index; FOP, frequency of optimal codons index; ENC, effective number of codons; GC3: GC percentage of 3rd position in synonymous codonsBack to article page