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Cell Division – a review

Cell Division – a review. Cell Cycle Control: What happens at each checkpoint?. M = mitosis (nuclear division) C = cytokinesis (cytoplasmic division) G = gap (cell growth) S = synthesis (DNA replicated, cell growth). When to Divide?. Growth Inhibition. Control Problems - Cancer.

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Cell Division – a review

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  1. Cell Division – a review

  2. Cell Cycle Control: What happens at each checkpoint? M = mitosis (nuclear division) C = cytokinesis (cytoplasmic division) G = gap (cell growth) S = synthesis (DNA replicated, cell growth)

  3. When to Divide?

  4. Growth Inhibition

  5. Control Problems - Cancer

  6. Supercoiling (DNA coils forming a chromatid)

  7. Human Chromosomes (unreplicated)

  8. Human Chromosomes (replicated and supercoiled)

  9. Chromosome (replicated)

  10. Chromosome Each DNA molecule coils to form a single chromatid. The two chromatids of a replicated chromosome are genetically identical.

  11. The Cell Cycle (Overview)

  12. Mitosis - Stages

  13. Prophase and Metaphase

  14. Anaphase and Telophase

  15. Cytokinesis (animal and plant)

  16. MEIOSISthe other type of nuclear division

  17. Gametes…why haploid?

  18. Oogenesis

  19. Spermatogenesis

  20. Meiosis

  21. Meiosis Overview

  22. Meiosis (Part I)

  23. Meiosis (Part II)

  24. Independent Assortment of Chromosomes

  25. Independent Assortmentanother view

  26. What happens when chromosomes do not separate properly during meiosis? Nondisjunction

  27. Down’s Syndrometrisomy 23

  28. Crossing Over Leads to Genetic Variability

  29. Compare Mitosis and Meiosis

  30. Mitosis vs. Meiosis

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