Effects of egg treatment (handled only, sham-injected and testosterone-treated) on 3D:4D in both right and left hind feet of painted dragon lizards.

a: Initial models also included sex and oviposition date, but these effects were not significant (p>0.19) and hence excluded.b: For fixed effects, the test statistic is F; for random effects, it is χ2 (see Materials and methods for details).