Answer: Metaphase
Explanation:
The cell cycle is important for the proper growth and development of the cell. During mitosis when the nucleus starts diving, the chromatids that make up the chromosomes gets separated from each other and moves to the opposite poles of the cell.
During the metaphase, the spindle fibers attached to the centromere of each sister chromatids. the sister chromatids line upside on the equator, center of the cell.