experimental phenotypic evidence cleavage arrested development evidence eco ECO:0000298 mchibucos 2011-01-11T03:28:49Z In the embryos of some organisms, inhibition of cytokinesis blocks neither the cell cycle nor the unfolding of the developmental program. As such, embryonic morphology can be frozen, allowing analysis of the developmental fate of each cell present at the time of cleavage arrest. A type of experimental phenotypic evidence where embryonic development proceeds although cytokinesis is blocked.