| − | '''Metaphase''' are the phases of [[mitosis]] (of which there is one phase) and [[meiosis]] (of which there are 2 phases, metaphase 1 and metaphase 2), or cell division, when the [[chromosome]]s align along the center of the cell. Because metaphase chromosomes are highly condensed, scientists use these chromosomes for gene mapping and identifying chromosomal aberrations. | + | '''Metaphase''' is the time period during [[eukaryote|eukaryotic]] cell division during which chromosomes line up along the equatorial plane of the cell before being drawn apart to opposite poles of the cell. Metaphase occurs once during [[mitosis]] but twice during [[meiosis]] (in meiosis these phases are called metaphase I and metaphase II). Metaphase is preceeded by Prometaphase and followed by Anaphase. Because metaphase chromosomes are highly condensed, scientists use these chromosomes for gene mapping and identifying chromosomal aberrations. |