Comparison of the GY94 and the MG94 models. The solid line shows ω = dN/dS versus RSA, as estimated by the GY94 model. The dashed line shows the same for the MG94 model. Under the MG94 model, ω shows moderate curvature. The GY94 model provides a better fit to the data (ΔAIC = 14).
Scherrer et al. BMC Evolutionary Biology 2012 12:179 doi:10.1186/1471-2148-12-179