Bulge-to-total ratio B/T of galaxies appearing in COSMOS and CANDELS against the Sérsic index n, M_* and B − V color. The blue line shows the best-fit model where we change the variable per panel: top-left is for varying n, top-middle is for varying M_* and top right is for varying B − V. The bottom panels illustrate the residuals of the data – model for each galaxy. The model seems to mostly agree but tends to underestimate B/T for higher values of the galaxy properties.