1. 3.2 Cell Division
- Cell division can occur in two ways: through asexual reproduction and sexual reproduction.
- In asexual reproduction, cell division occurs through a process called
MITOSIS.
- In mitosis, the nucleus doubles its genetic material so it has two copies.
Then, the cell splits into two and each cell has the exact same genetic information as the parent cell.

2. Mitosis
What’s so important about cell division?

4. …… and division of the cytoplasm (cytokinesis).

5. Purpose of Mitosis: 1. To replicate single-celled organisms.
2. For cellular repair of a multicellular organism.
3. For growth

6. 6: The same amount as the parent cell
So if an amoeba had 6 chromosomes in its nucleus, how many will it have just before it splits in two? 12
How many chromosomes will the divided cell have?
6: The same amount as the parent cell

7. Mitosis
                                                                                                    

8. Cancer Is One Outcome of A Runaway Cell Cycle
Licentious division - prostate cancer cells during division.

9. Mitosis in Action
Blue shows DNA, green shows spindle fibers.

10. In Animal Cells, a Cleavage Furrow Forms and Separates Daughter Cells
Cleave furrow in a dividing frog cell.

11. Meiosis
The purpose of MEIOSIS is to produce sex cells (gametes, eggs and sperm).
Meiosis produces half the number of chromosomes as the original cell. Meiosis involves a reduction in the amount of genetic material, through 2 cell divisions.
The reason for the reduction is that only half the genetic information is needed to be passed on to the offspring. We get half the genetic information from the male and half from the female.