Fig. 4
From: PoSE: visualization of patterns of sequence evolution using PAML and MATLAB
Synonymous substitutions, nonsynonymous substitutions and dN/dS ratio over a sliding window. Upper plot: Dynamics of accumulation of synonymous and non-synonymous substitutions along the sequence interval according to user-defined sliding windows. Lower plot: Estimated dN/dS ratios for each user-defined sliding window. Data from a survey of wild poliovirus sequences [2]