Fig. 12: Rate of EVL edge straightening correlates positively with the spring constant of edge bonds (resistance of the edge to stretch).

Spring constant was varied from our default value of 0.5. Vertical lines in each plot mark the cessation of cell division at 55% epiboly (polar angle ϕ ≅ 0.53π). Each plot line represents median values of N = 28 replicates, with 5–95 percentile ranges (shading). Legend in (a) applies to all panels. a Straightness index. b Margin cell count. c Cumulative margin cell rearrangement events. d Tension along the leading edge.