Mitosis and the Cell Cycle

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7 Terms

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When do cells divide?

  • For growth (develop a body)

  • Replace worn out cells

  • Repair damaged tissue

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What is the cell cycle?

When a cell that is actively dividing goes through a series of stages

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3 main phases of the cell cycle?

Interphase, mitosis, cytokinesis

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Interphase

  • Cell grows

  • Sub-cellular structures replicate

  • DNA replicates creating 2 copes of each chromosme

  • Further growth

  • DNA checked for errors

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Mitosis

  • Chromosomes move to opposite poles

  • Nucleus divides

  • Genetic material splits in 2

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Cytokinesis

  • Cytoplasm splits into 2

  • Cell membrane reforms forming 2 genetically identical daughter cells

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Why can’t different species undergo repdroductio?

Different number of chromsomes