Cell division

CELL DIVISION

  • The cell cycle, or cell-division cycle, is an ordered series of events that take place in a cell leading to cell growth and its division and duplication (replication into two daughter cells).
  • Cytokinesis is the physical division of the cytoplasm whereby the nuclei, cytoplasm, organelles and cell membrane of a single eukaryotic cell is divided into two daughter cells containing roughly equal shares.

Types of Cell Division

Mitosis

  • Mitosis produces two daughter cells that are identical to the parent cell.
  • This type of cell division allows multicellular organisms to grow and repair damaged tissue.

Meiosis

  • Meiosis (double cell division) produces daughter cells that have one half the numbers of chromosomes as the parent cell.
  • Meiosis is necessary in sexually-reproducing organisms because the fusion of two gametes (fertilization) doubles the number of chromosomes.
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Last modified: Tuesday, 17 April 2012, 4:38 AM