Cell division is the process by which a single cell divides into two or more daughter cells. It can occur through CLEAVAGE, mitosis, MEIOSIS, and meiotic spireme. CLEAVAGE is the process of dividing a cell into two or more parts, usually by mechanical means. Mitosis is the process of nuclear division in which the nucleus divides into two identical daughter nuclei. MEIOSIS is a type of cell division that produces four haploid daughter cells from a single diploid parent cell. ANODE is a type of cell division in which the chromosomes are divided into two equal sets. Meiotic spireme is a type of cell division in which the chromosomes are divided into four equal sets.