1. Aim What is Mitosis?

2. A Question When the Dutch first settled New York they had only one central government . How come we now need five boro subdivisions of government?

3. More demands on government
People needed
More police
More firemen
More libraries
More services

4. Solution to these Demands
Divide the government into smaller parts to increase efficiency

5. How does a cell handle overload?
The cell divides into two parts or daughter cells
Cell division produces two identical daughter cells

6. Two Identical Cells
Daughter cells contain the same number and type of DNA as the parent cell
100% the same

7. What controls the cell? The nucleus controls the cell
In cell division the nucleus divides first

8. Mitosis
Division of the cell nucleus is called mitosis

9. DNA is in the Nucleus
In order for the nucleus to divide the DNA must replicate into a full set of double chromosomes

10. Then the cell divides
The process of the cytoplasm dividing is called cytokinesis
You get two identical daughter cells

11. Important steps in cell division
Interphase (growth)
Biologist divide mitosis into four phases

12. Normal mitotic cell division results in each daughter cell having
1.half the number of chromosomes as the parent cell
2.the same number and kinds of chromosomes as the parent cell
3.the same number but different kinds of chromosomes as the parent cell
4.twice the number of chromosomes as the parent cell

13. Which statement regarding this process is correct?
Cell B contains the same genetic information that cells A and C contain.
Cell C has DNA that is only 50% identical to cell B.
Cell A has DNA that is only 75% identical to cell B.
Cells A, B, and C contain completely different genetic information

14. The diagrams represent a cell process
The diagrams represent a cell process. If the cell in Diagram 1 contains 4 chromosomes, what is the total number of chromosomes in each cell in Diagram 3? 8 2 16 4

15. Which would most likely result if mitosis was not accompanied by cytoplasmic division?
1.two cells, each with one nucleus
2.two cells, each without a nucleus
3.one cell with two identical nuclei
4.one cell without a nucleus