Cytokinesis is the process in which a single cell divides into two daughter cells. It is the final stage of mitosis, the process by which replicated chromosomes are separated into two new cells. During cytokinesis, the cytoplasm of a single cell divides into two new daughter cells, a process that is necessary to maintain the number of cells in an organism. The process begins with a cleavage furrow, which is an indentation that forms in the center of the cell, and it ends with the completion of the division of the cytoplasm and the separation of the two daughter cells.