Fig. 4. Timing of cell-cycle phases are sensitive to varying amounts of CycB. Prophase-metaphase (A) and interphase durations (B) in one cycB, two cycB and four cycB embryos determined from live embryos. For each genotype, 15 to 18 embryos were analyzed. Arrows in B refer to the specific cycle when interphase becomes longer: cycle 6 for one cycB embryos, cycle 7 for two cycB embryos and cycle 9 for four cycB embryos. (C) Estimated durations of interphase, metaphase and anaphase of wild-type embryos at cycle 7 based on fixed embryos (n=333 for one cycB embryos, n=915 for two cycB embryos and n=501 for four cycB embryos).