Fig. 6.

Universal rule for the selection of the plane of division. (A) Proportion of cell divisions along plane i as a function of the relative length difference, δ_ij. The proportions are calculated from bins containing at least 70 divisions. The solid line is the best fit of the experimental data with the equation [1 + e^-βδ_ij]^-1 and β = 20.6. Values of β for individual species fits are reported (Inset). (B) Observed proportion of cell divisions along plane i as a function of the predicted probability P_i = e^-βl_i/ρ/Z . The two clouds correspond to divisions where plane i is the shortest plane (mode 1) and the second shortest plane (mode 2).