Fig. 4From: Quantifying shifts in natural selection on codon usage between protein regions: a population genetics approachOdds ratio distributions for 100 simulated genomes by relative position in helices. Genomes were simulated assuming selection was identical across all positions in the helices. Dashed red lines indicate the odds ratio reported by [17] estimated from real codon usage patterns. Only proteins used in [17] were included in this analysisBack to article page