Fig. 4.

Phenotypic and genotypic trends for intrinsic and trained running capacity across 15 generations of selection (population 3). A: intrinsic capacity (DIST¹, m) phenotypically increased for both LRT and HRT lines across generations as a correlated response to selection but were not different from each other. No genotypic trends (EBV) for DIST¹ were revealed across selection in either line. B: trained capacity (DIST², m) diverged phenotypically between LRT and HRT as a function of selection on ΔDIST. Genotypic trend (EBV) for DIST² also diverged between LRT and HRT across selection. LRT (light lines) and HRT (dark lines). Mean of the founder population is plotted at generation 0 (box symbol).