Cell Division - Mitosis
Mitosis is a type of cell division that produces two new identical cells.
During prophase the chromosomes are copied to make two copies of the cell's DNA. During metaphase the chromosomes line up along the equator of the cell. During anaphase the copied pairs of chromosomes are separated at the centromere by spindles into daughter chromosomes (from the sister chromatids), which are pulled towards opposite poles of the cell.
During telophase, two nuclei form and the cell divides.