Fig. 8. Frequency distribution of wave velocities during early aggregation and in the mound stage. The data were divided into classes with a width of 25 µm/minute and normalised to account for the different number of measurements. (A) Distribution of the velocities of darkfield waves. The mutants show a similar distribution, whereas the parental strain DH1 is slightly shifted towards higher values. (B) Distribution of the velocities of optical density waves in the mound stage. The velocities of the four strains are essentially the same.
