Figure 7. Changes in angular distribution of lost and newly formed cell–cell junctions.
(A–D) Effective proportions of cell–cell connections that are lost (blue) or gained (red) in different directions as a consequence of cell rearrangements in a WT wing. To calculate these effective proportions, we subtracted the angular distribution of all cell boundaries from the angular distribution of cell–cell connections that were lost or gained by cell rearrangements, revealing the orientation of cell boundaries with a disproportionate tendency to be lost or gained. Rose diagrams show angles of cell boundaries that are more likely to be gained (red) or lost (blue) at specific times during the video corresponding to important changes in cell dynamics: (A) 18.9 hAPF (peak of negative shear rate by cell rearrangements), (B) 21 hAPF (peak of correlation effects), (C) 21.5 hAPF (shear rate by cell rearrangements crosses zero) and (D) 24.5 hAPF (peak of positive shear rate by cell rearrangements).