Figure 2

Partitioning trajectories over the course of cell division. (a) Partitioning trajectories of the bud (solid) and mother (dashed) for particular values of α and β (the terminal points are also displayed in Figure 3). The model assumes linear growth of the bud volume over the course of cell division (see Methods). (b) Partitioning trajectories for solutions corresponding to different diffusion constants (see Figure 3 as well): D = D _c (red, α = 1, β = 1.5); D = 10 D _c (orange, α = 10, β = 15); D = D _c /10 (purple, α = 0.1, β = 0.15). The dashed line gives the asymptotic limit, corresponding to equilibration between mother and bud at all time points. (c) Division of the trajectories in (b) by the dashed asymptotic trajectory gives the extent of equilibration trajectories. Exact values for the global parameters used to calculate the critical diffusion constant are based on the geometry and division timescale used in Zhou et al. [18] (see Methods).