Typical course and outcomes of evolution. Dynamics of fitness potential (A, B) and equilibrium concentrations of molecules A and X in one of the evolved organisms (C). A. Dynamics of fitness potential at the beginning of an experiment. B. Dynamics of fitness potential of the best organism in the population in the course of a whole experiment. Data from five independent populations are shown. C. The dependencies of equilibrium concentrations of molecules A and X on the concentration of A outside the cell in one of the organisms produced as the result of evolution.