1. Unit 3 Notes:
Mitosis

2. (1) Big Ideas:
Mitosis is used to make more Non-Sex cells (called Somatic Cells).
1 identical copy of original cell is made.
Start with1 Cell, end with 2 identical cells.
Genetic Info Stays The Same:
2n  2n or
Diploid  Diploid
Diploid? 2n?  Refers to the original full set of DNA.

3. Let’s Watch A Video…

4. (2) Mitosis Stages
Prophase
Metaphase
Anaphase
Telophase

6. The Parent Cell (Before Interphase of the Cell Cycle)
Nucleus
Un-Condensed DNA
Cell Membrane

7. (3) Prophase “Before” Phase
Chromatin condenses into chromosomes and chromosomes visible.
Nuclear Membrane dissolves.
Centrioles prepare to help with division.

8. Dissolving Nuclear Membrane
Centromere
Cell Membrane
Sister Chromatids (Replicated DNA)

9. (4) Metaphase
Sister Chromatids pair up at Metaphase Plate by each other’s centromere.
Say What???
Sister Chromatids  Matching Segments of DNA (identical genes and alleles).
Metaphase Plate  The center of the cell.
Centromere  The center of a chromosome.

10. Pairs of Sister Chromatids
Centromere
Cell Membrane
Metaphase Plate

11. (5) Anaphase Sister Chromatid Pairs Separate.
Each side of the cell gets 1 copy of the genetic information!

12. Yes… I know this looks like a butt…..
Cell Membrane
Separated Chromosomes

13. (6) Telophase Chromosomes are completely separated.
Chromosomes uncoil.
Nuclear Membrane Re-Forms.

14. Reforming Nuclear Membrane
Cell Membrane

15. Identical Copies! (Now that’s redundant.)
The Daughter Cells (After Mitosis)

20. Let’s Watch A Video…