Fig. 3: Results of bootstrapping simulations of the tarsus length variable mixed models.

Histograms represent simulated distributions of differences in genetic variances calculated between treatment groups indicated on the x-axes. Overlaid on the histograms are: kernel density estimators (blue solid line), zero lines (blue dotted) and differences in variances from original mixed models (red solid lines). Panels represent differences in genetic variance between control and CORT groups (A), TESTO and CORT groups (B), and control and TESTO groups (C)