cell cycle comprising mitosis without cytokinesis syncytial blastoderm mitotic cell cycle GO:0035186 biological_process Mitotic division cycles 10 to 13 of the insect embryo. This is the second phase of the syncytial period where nuclei divide in a common cytoplasm without cytokinesis. The majority of migrating nuclei reach the embryo surface during cycle 10, after which they divide less synchronously than before, and the syncytial blastoderm cycles lengthen progressively. mitotic cell cycle, embryonic