Supporting information 1 from Morph-specific artificial selection reveals a constraint on the evolution of polyphenisms

Cumulative response to selection on the relative width of the third pair of legs (see methods for measurement) of fighter males of the bulb mite Rhizoglyphus echinopus, plotted against the cumulative selection differential that resulted from 10 generations of morph-specific selection for thinner (down lines; grey) and thicker legs (up lines; black). Dashed lines represent linear models fit to estimate realized heritability.