Fig. 3From: Ancient role of ten-m/odz in segmentation and the transition from sequential to syncytial segmentationPeriod 2 oscillation. a a normal oscillator is seen. Concentration oscillates with a period T a of about 4.5 time units. b the system has undergone period-doubling. Former high peaks with period T a are replaced by high peaks only at every second peak, with a lower intercalating peakBack to article page