1. Cell Division
Mitosis & Meiosis

2. Cell Division
Also known as Mitosis

3. Phases of Mitosis

4. The Basic Phases of a Cell’s Life:
Mitosis
The Basic Phases of a Cell’s Life:
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

5. The longest stage of a Cell’s life
Interphase
The longest stage of a Cell’s life
The time spent between divisions
Produces all materials required for growth
Preparation for division

6. Mitosis: Cell Division
The last part of the Cell Cycle is called Mitosis and has 4 phases during which the cell divides into 2 cells

7. The Cell begins the division process
Prophase
The Cell begins the division process
The nucleolus disappears,
The nuclear membrane breaks apart

8. 3. The chromosomes
become visible
4. The spindle
apparatus forms
and attaches to
the centromeres
of the
chromosomes

9. The Second Phase of Mitosis
Metaphase
The Second Phase of Mitosis
The Nuclear Membrane is completely gone
2. The duplicated chromosomes line up along the cell's equator.

11. Anaphase The third phase of Mitosis
Diploid sets of daughter chromosomes separate
They are pushed and pulled toward opposite poles of the cell by the spindle fibers

12. Telophase The nuclear membrane and nucleoli (nucleus) reform.
Cytokinesis is nearly complete,

13. The Cell Plate begins to form
The Cell prepares for finial division

14. Cytokinesis – The final stage of Mitosis
The cytoplasm, organelles, and nuclear material are evenly split and two new cells are formed.
Cell Plate

15. The two new cells – each exactly like the other – are called Daughter Cells

16. Quick Review:
The following slides are drawings of the stages of Mitosis. On your notes, please draw each phase and label it.

17. Interphase – The Cell spends the majority of its life here, growing and functioning. During the S Phase of the Cell Cycle, the DNA replicates, in anticipation of Mitosis

18. In Early Prophase of Mitosis the Chromosomes get small, centrioles move to the poles of the nucleus, and spindle fibers develop
Chromosomes consisting of 2 Sister Chromatids
Pair of Centrioles
Spindle Fibers

19. Late Prophase happens when the Nuclear Envelope disintegrates and spindle fibers begin to move Chromosomes toward the center of cell.
Spindle Fibers
Chromosomes

20. During Metaphase the Chromosomes line up across center of the cell, also called the equator, or Metaphase plate.
Spindle Fibers
Equator, or Metaphase Plate
Chromosomes

21. In Anaphase the Chromatids that make up each Chromosome move apart and travel to opposite ends of cellular spindle
Daughter Chromosomes
Chromatid
Chromosome

22. In Telophase an envelope surrounds each set of Chromatids to form new Nucleus and the Cytoplasm starts to divide
Cleavage Furrow

23. Cytokinesis takes place when the Cytoplasm divides and two cells with identical genetic material are formed
Daughter Cells

24. Quick Review – Place Cells in Mitosis Order
A B C
D E

25. Interphase
Quick Review: Identify What happens in each phase of Mitosis:
Prophase
Metaphase
Anaphase
Telophase