Correspondence Analysis of relative synonymous codon usage (RSCU) for all 14,005 rice genes. Panel A. This panel shows the distribution of genes on the primary and secondary axes (accounting for 36.9% and 6.9% of the total variation, respectively). The two classes of genes (High GC and Low GC) are color coded; the high GC genes are shown in red and the low GC genes are shown in blue. Panel B. This panel shows the underlying distribution of codons on the same two axes as shown in Panel A. Codons ending with G or C are shown in red, and codons ending with A or U are shown in blue.
Wang and Hickey BMC Evolutionary Biology 2007 7(Suppl 1):S6 doi:10.1186/1471-2148-7-S1-S6