Stochastic time behavior of a single ribocell with N
= 1. In the upper plot, the stochastic time trend (black line) of the reduced surface ϕ is compared with the deterministic time course (gray line); vertical dashed lines indicate the simulated division times. The lower plot explicitly shows the 14 divisions and the two transformations of the ribocell due to RNA segregation. After the first division, it becomes a reduced ribocell and after 10 generations a self-producing vesicle.