Figure 6
CG
3
skew in plant coding regions. 
stratified by GC3 classes (High (H): GC3 ≥ 0.8 and Low (L): GC3<0.8) for coding regions of arabidopsis, rice, sorghum, and banana. Genes are aligned by ATG, and frequencies of nucleotides are computed in a sliding window of 50 nucleotides.