1.6 - Cell division

• Mitosis


  A form of cell division that produces identical cells
• Role of mitosis and the cell cycle


  • Produce identical daughter cells for growth and asexual reproduction
  • Mitosis does not give rise to genetic variation

  
• Cell cycle


  1. Cell forms

  2. Cell grows

  3. Cell divides to form daughter cells
• Mitosis


  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase
• Cytokinesis


  Parent and replicated organelles move to opposite sides of the cell, cytoplasm divides to produce two daughter cells

  
• Interphase


  Cell grows and prepares to divide, chromosomes and some organelles are replicated, chromosomes begin to condense

  
• Meiosis


  A form of cell division that gives rise to genetic variation, produces haploid gametes with half the number of chromosomes

  
• Genetic variation in meiosis


  • Crossing over of chromatids where pairs of chromosomes line up and exchange some of their genetic material
  • Independent assortment of chromosomes, various combinations of chromosome arrangement