Fig. 5.

Mechanistic model for the selection of the division plane. (A) Before preprophase, microtubules radiate from the nucleus. (B) Microtubules reorganize into a finite number of configurations corresponding to the shortest distances between the nucleus and cell edges. (C) The equilibrium configuration favors microtubules that are short. (D) The PPB forms on the edges most heavily populated by microtubules. (E) The cell plate forms at the same position as the PPB. Figure based on refs. 20 and 24.