CELL CYCLE STAGE M
Stage M is one of the four sequential stages of the cell cycle. Stage M begins with the mitosis and ends with the cytokinesis. In the beginning of stage M the duplicated chromosomes, which have been in dispersed interphase state, become condensed and visible into a light microscope. The nuclear membrane degrades, and coordinated movements of chromosomes occur, which result in dividing of pairs of sister chromatids. As the result of the nuclear division, two new nuclear membranes are formed. Then the cytoplasm divides, and, finally, two daughter cells, each having one nucleus, appear. The process of the cytokinesis comp letes stage M, and the resting stage of the next cell cycle begins.