GCSE Biology (AQA)

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Mitosis

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Cell Biology Cell Division

Mitosis

2:56 Cell Division
Spec 4.1.2.2
Previous Interphase Next Stem Cells
  • After interphase, cells divide into two through mitosis and cytokinesis.
  • Mitosis results in two genetically identical diploid daughter cells from one diploid parent cell.
  • The DNA is duplicated during interphase before mitosis begins.
  • During mitosis, the nucleus breaks down after chromosomes have duplicated.
  • Chromosomes line up in the middle of the cell, at the cell equator, which is an imaginary line.
  • Chromosomes are then pulled to each end of the cell, becoming chromatids once separated from the centromere.
  • The cell membrane and cytoplasm divide, enlarging the cell as it prepares to split.
  • Cytokinesis, the physical process of cell division, involves the division of the cytoplasm.
  • New nuclei form around the chromatids in each of the two new cells, completing the formation of two distinct diploid cells.
  • Understanding the general mechanism of mitosis involves describing how one parent cell divides into two daughter cells, without necessarily knowing the names of all mitotic phases.

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