FIG. 3.

Relative mass of a newborn cell during its cycle and transitions (at time zero; all in minutes) from growth conditions of τ = 40, C = 40, and D = 20 to growth with τ = 25, C = 40, and D = 20 (shift-up; top panel) and to growth with the same rate (τ = 40) and D = 20 but C = 90 (step-down; bottom panel). Colors of bars conform to those in Fig. 2. Gray areas indicate the transition periods. Horizontal lines indicate 2^{(N − 1)} multiples of initiation mass M_i (see the legend to Fig. 2). (Adapted from the schematic online simulation of Norbert Vischer, which is freely available at http://simon.bio.uva.nl.)