1. Mitosis

2. Mitosis = nuclear division in which each daughter cell receives an exact copy of chromosomes in parent cell.
4 phases

3. Prophase

4. Nuclear envelope breaks down
Centrosomes with centrioles move to opposite sides (poles) of cell
Spindle fibers (made of microtubules) form from centrosomes

5. (spindle fibers) 2 types of spindle fibers
- Kinetochore fibers – attach to kinetochore protein at centromere
- Polar fibers – connected pole to pole

6. Metaphase Chromosomes line up in center of cell
Spindle fibers attach to centromeres

7. Anaphase
Spindle fibers shorten pulling sister chromatids to opposite sides of cell

8. Telophase Nuclear envelope re-forms around each new set of chromosomes
Chromosomes spread out into chromatin
Spindle fibers disappear

10. Cytokinesis = division of cytoplasm
In animals – membrane pinches in b/t 2 new nuclei forming a cleavage furrow

11. In plants, cell plate forms in between 2 nuclei
Cell plate develops into membrane
New cell wall forms between 2 new membranes