Saturday, June 24, 2017

3.23: Understand that Division of a Diploid Cell by Mitosis Produces Two Cells which Contain Identical Sets of Chromosomes

MITOSIS: One Cell Division that Produces Two Genetically identical, Diploid Daughter Cells

MITOSIS
Diagram Showing the Cell Division by Mitosis
PROCESS:
  • Each Chromosome in the Nucleus Copies Itself (Forms X - Shaped Chromosomes)
  • Chromosomes will Line Up at the Centre of the Cell where Cell Fibres will Pull them Apart
  • The Cell Divides into Two; Each New Cell has a Copy of Each of the Chromosomes
IMPORTANCE:
  • All Cells in the Body (Excluding Gametes) are Produced by the Mitosis of the Zygote
  • Important for the Replacement of Cells E.g, Skin Cells, Red Blood Cells
OCCURS IN:
  • Growth: Mitosis will Occur to Produce New Cells
  • Repair: To Replace Damaged or Dead Cells
  • Cloning: Make Identical Copies
  • Asexual Reproduction: Mitosis to Produce Offspring that is Genetically Identical to the Parent

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