1. STEELE
Cell Division

2. MITOSIS

3. Mitosis
Def: The process of cell division which results in the production of two daughter cells from a single parent cell.
The daughter cells are identical to one another and to the original parent cell.

4. Mitosis Can be divided into stages: Interphase Prophase Metaphase
Anaphase
Telophase
Cytokinesis

5. Interphase *cell prepares to divide
Animal Cell:
DNA replicated
Organelles replicated
Cell increases in size
Plant Cell:
DNA replicated
Organelles replicated
Cell increases in size

6. Interphase
Plant Cell
Animal Cell

7. Prophase *cell prepares for nuclear division
Animal Cell:
Packages DNA into chromosomes
Plant Cell:
Packages DNA into chromosomes

8. Prophase
Plant Cell
Animal Cell

9. Metaphase *Cell prepares for chromosome division
Animal Cell:
Chromosomes line up at the center of the cell
Spindle fibers attach from daughter cells to chromosomes at the centromere
Plant Cell:
Chromosomes line up at the center of the cell
Spindle fibers attach from daughter cells to chromosomes at the centromere

10. Metaphase
Plant Cell
Animal Cell

11. Anaphase * The chromosomes divide
Animal Cell:
Spindle fibers pull chromosomes apart
½ of each chromosome (called chromotid) moves to each daughter cell
Plant Cell:
Spindle fibers pull chromosomes apart
½ of each chromosome (called chromotid) moves to each daughter cell

12. Anaphase
Plant Cell
Animal Cell

13. Telophase & Cytokinesis *The cytoplasm divides
Animal Cell:
DNA spreads out
2 nuclei form
Cell wall pinches in to form the 2 new daughter cells
Plant Cell:
DNA spreads out
2 nuclei form
New cell wall forms between to nuclei to form the 2 new daughter cells

14. Telophase
Plant Cell
Animal Cell

15. Motosis Animation*
CELL MITOSIS

16. Cell Cycle

17. MEIOSIS

18. Meiosis
Def: Meiosis is the type of cell division by which germ cells (eggs and sperm) are produced.
One parent cell produces four daughter cells.
Daughter cells have half the number of chromosomes found in the original parent cell.

19. Meiosis DNA replicates once, but the nucleus divides twice.
Four stages can be described for each division of the nucleus.

20. Meiosis I *1st division of Meiosis
Prophase 1
Metaphase 1
Anaphase 1
Telophase 1

21. Prophase I
Def: Each chromosome duplicates and remains closely associated. These are called sister chromatids.

22. Metaphase I
Def: Chromosomes align at the center of the cell.

23. Anaphase I
Def: Chromosome pairs separate with sister chromatids remaining together.

24. Telophase I
Def: Two daughter cells are formed with each daughter containing only one chromosome of the chromosome pair.

25. Meiosis II *2nd division of Meiosis
Prophase 2
Metaphase 2
Anaphase 2
Telophase 2

26. Prophase II
Def: : DNA does not replicate.

27. Metaphase II
Def: Chromosomes line up at the center of the cell.

28. Anaphase II
Def: Centromeres divide and sister chromatids move separately to each pole.

29. Telophase II Def: Cell division is complete.
Four haploid daughter cells are formed.

30. Meiosis

31. What's the Difference? Mitosis: Asexual Cell divides once
Two daughter cells
Genetic information is identical
Meiosis:
Sexual
Cell divides twice
Four haploid daughter cells
Genetic information is different

32. Comparison Animations*#1 #2