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  1. 1. Eukaryotic Cell Reproduction Interphase, Mitosis, and Cytokinesis
  2. 2. Interphase Cell is carrying out all life functions  plus storing energy for mitosis Each chromosome is duplicated which  forms chromatids Chromatids: identical copies of a  chromosome, held together at centromere
  3. 3. Prophase 1st phase of Mitosis  Nuclear membrane dissolves  Chromosomes condense and start to  move towards center of cell Centrioles move to opposite sides of cell  Mitotic spindle fibers form between the  centrioles
  4. 4. Metaphase 2nd Stage of Mitosis  Mitotic spindle fibers attach to the  centromeres of each pair of chromosomes The chromosomes are lined up along  the equator of the cell
  5. 5. Anaphase 3rd Stage of Mitosis  Chromatids separate at the  centromere Each chromatid is pulled to a pole of  the cell by the mitotic spindle fibers
  6. 6. Telophase Last Stage of Mitosis  Nuclear membranes form around the  two sets of chromosomes Chromosomes unwind  Mitotic fibers disappear  Mitosis is now complete 
  7. 7. Cytokinesis Eukaryotic cells without a cell wall, cell  membrane pinches inward and eventually all the way through to form the two daughter cells In eukaryotic cells with a cell wall, a  cell plate forms in the middle of the cell to divide the two cells.
  8. 8. What Did You Learn? How are binary fission and mitosis  similar? How are they different? Why is it important for chromosomes  to be copied before cell division? What would happen if cytokinesis  occurred without mitosis?