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Summary The cell cycle: Mitosis and Meiosis $7.08
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  7. The cell cycle: Meiosis and Mitosis

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Summary The cell cycle: Mitosis and Meiosis
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  • Course
  • The cell cycle: Meiosis and Mitosis
  • Institution
  • OCR
  • Book
  • A Level Biology A for OCR Student Book

A brief summary of the main points in the spec. These notes outline the events in the cell cycle and go into depth about the stages of mitosis and meiosis. I recommend using these alongside a revision guide or textbook when revising. If any mistakes are found let me know!

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Document information

  • No
  • 6.1 - 6.3
  • May 31, 2021
  • 2
  • 2020/2021
  • Summary

Subjects

  • a level biology
  • ocr a biology
  • as biology
  • mitosis
  • meiosis
  • cell division
  • biology
  • a level

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  • The cell cycle: Meiosis and Mitosis
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Content preview

Cells divide for There are 3 main stages to the cell cycle:
growth and repair • Interphase - ce preparation
with divisions • Metaphase - division of the nucleus
happening in every • Cytokinesis - splitting of the cytoplasm
cell all the time


The cell spends 95% of it's time in interphase where it is prepared for division




Cells leave the cell cycle permanently due to:
• Di erentiation - specialised ce s cannot divide and so leave the ce cycle permanentl
• DNA damage - damaged ce s cannot divide as they aren't viable for replication and so
permanently leave the ce cycl
• Age - ce s can divide a maximum number of times. These ce s become senescent (dormant) and
can be linked to age related i nesses E.G. Arthritis and cancer

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