Before revision:  Ring breaking dynamics in the presence of hydrolysis naturally induce rescue and catastrophe events , irrespective of the mechanism of hydrolysis . Based on our model, we conclude that the Z-ring undergoes random breaking and closing during the process of cell division .
After revision:  Ring breaking dynamics in the presence of hydrolysis naturally induce rescue and catastrophe events in this model irrespective of the mechanism of hydrolysis . Based on our model, we conclude that the Z-ring undergoes random breaking and closing during the process of cell division .