Final answer:
Mitosis is a process in which the nucleus of a cell divides. During mitosis, the chromosomes line up, separate, and move to opposite poles of the cell, resulting in two daughter cells with the same number of chromosomes.
Step-by-step explanation:
Mitosis is a process in which the nucleus of a cell divides. It consists of two major steps: mitosis and cytokinesis. During mitosis, the chromosomes line up in the center of the cell, sister chromatids separate, and move to opposite poles of the cell, resulting in two daughter cells with the same number of chromosomes as the parent cell. Cytokinesis then divides the cytoplasm to create two genetically identical daughter cells.