1. Mitosis vs. Meiosis

2. Stand and Say - Mitosis Face your table partner
Each will take a turn talking for 30 seconds about what they remember regarding Mitosis (what happens, why does it happen, etc)
The listener MAY NOT TALK but should use non-verbal communication to support the “talker”
Class discussion
Write one question on the post-it you have about cell division and organisms reproduce and grow.

3. Mitosis
Meiosis
Meiosis

4. Based on the diagram,
The difference between mitosis and meiosis is that mitosis produces two identical daughter cells and meiosis produces four genetically different daughter cells

5. Mitosis
Meiosis

6. The numbers The cells created from mitosis are diploid or 2n.
The cells created from meiosis are haploid or n
Definitions:
Diploid (2n) – two of each type of chromosome (in homologous pair – carry the same trait)
Haploid (n) – one of each type of chromosome

7. The numbers Human cells have 46 chromosomes.
Therefore, the diploid number (2n) of chromosomes in humans is 46.
The haploid number (n) of chromosomes in humans is 23.

8. The reason why: mitosis
To replace other cells that have been damaged or worn out
To allow multicellular organisms to grow
For asexual reproduction

9. The reason why: meiosis
Meiosis results in FOUR CELLS with HALF the number of chromosomes so that when the sex cells (sperm and egg) combine, the original or normal number of chromosomes will be restored

10. One last thing… [the] where?
Mitosis occurs in normal body cells (i.e. skin cells), and meiosis occurs in sex cells (i.e. sperm and egg) only.

11. Videos explanations
Meiosis: Crossing Over and Variability [3D Animation]
Nova
Amoeba Sisters