Wednesday, June 10, 2009

Lesson 20: Cells reproducing themselves-mitosis and meiosis

Hi,

This set of 43 slides are very good in explaining the 2 types of cell division. The following points are precisely and concisely explained:
  • all cells of the body are not the same, importance of cell specialisation
  • copies of cells are made for growth, repair, reproduction etc
  • mitosis occurs almost everywhere, 2 identical daughter cells are produced
  • meiosis occurs in gonads only, 4 non-identical daughter cells are produced
  • mitosis for growth and repair, almost all body cells produced in this way
  • meiosis for sexual reproduction, occurs for reproductive purpose
  • photomicrograph and line diagrams of different stages of mitosis
  • photomicrograph and line diagrams of different stages of meiosis
  • interphase, metaphase, anaphase, telophase
  • differences between mitosis and meiosis,
  • importance of meiosis is sexual reproduction
  • comparing ageing process with cancer formation




Cheers

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