1. Mitosis Click on the hyperlink above to watch a tutorial of the cell cycle

2. Critical Check Points in the Cell Cycle

3. Chromosome Duplication
Kinetochore

4. The Phases Prophase Interphase Prometaphase Metaphase Cytokinesis
Telophase
Anaphase

5. Mitosis Tutorial Click on the hyperlink above
- Watch the narration of mitosis
- Complete the step through version of mitosis
- Complete the quiz after the tutorial

6. Interphase period of cell growth and metabolic activity
DNA is duplicated, but exists as chromatin
organelles have been replicated
G1, S, and G2 subphases

7. Prophase chromatin condenses and forms chromosomes
mitotic spindle (microtubules) forms from centrosomes
centrosomes contain centrioles in animal cells
Prophase
Interphase

8. Prometaphase nuclear envelope breaks down
spindle fibers attach to chromosomes at a structure called a kinetochore
- protein structure that assembles the centromere
spindle fibers begin to move chromosomes

9. Metaphase
chromosomes have been aligned in the middle of the cell (metaphase plate)
centromeres are lined up
Metaphase

10. Anaphase sister chromatids of each chromosome are separated
spindle fibers pull the sister chromatids apart
some spindle fibers act to elongate the cell
Anaphase

11. Telophase cell elongation continues
nuclear envelopes reform around each set of chromosomes
chromosomes uncoil
mitotic spindle disappears

12. Cytokinesis division of the cytoplasm
two genetically identical daughter cells are formed
resulting daughter cells are diploid

14. Animal and Plant Cell Mitosis
Animal Cell
have centrosomes and centrioles which generate the mitotic spindle
cell membrane pinches inward during cytokinesis dividing the two cells (cleavage furrow)

15. Animal and Plant Cell Mitosis
only have centrosomes
cell plate forms during cytokinesis
vesicles carrying cell membrane and wall components are transported to the midline
- vesicles fuse forming the new cell membrane and wall

16. Cell Plate Formation