cell cycle

• What are the 3 stages of interphase?

  Gap 1, Synthesis, Gap 2
• What happens in G1?

  Cell grows and new organelles and proteins are made
• What happens in the S phase?

  DNA is replicated
• What happens in the G2 phase?

  Cell keeps growing and proteins needed for cell division are made
• What are the 4 stages of mitosis?

  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase
• what happens in prophase

  -chromosomes condense and become visible

  -nucleolus disintegrates

  -nuclear membrane breakdown

  spindle fibres appear and attach to centromeres

  
• centromere


  Area where the chromatids of a chromosome are attached

  
• what happens in metaphase


  spindle fibres attach to chromosomes

  chromosomes align at the metaphase plateaon the equator

  
• What happens in anaphase?

  -centromeres divide, spindle fibres shorten

  - sister chromatids move to opposite sides

  
• what happens in telophase

  Nuclear membrane reforms

  Chromosomes decondense

  Spindle fibres disappear