Mitosis is the process by which a cell nucleus divides into two identical nuclei. It has four stages: prophase, metaphase, anaphase and telophase. The genetic information contained in the genes and chromosomes is replicated and divided equally between the two daughter nuclei, allowing new cells to be created with all the necessary genetic information.

1. MITOSIS! Thurs. Sept. 23, 2010

2. Review Mitosis has 4 stages: Prophase Metaphase Anaphase Telophase Mitosis is the process by which the nucleus of a cell divides into TWO IDENTICAL nuclei

3. Why is it important that the nucleus divides into IDENTICAL nuclei? Remember: the nucleus contains the genetic information GENES! (section of DNA) Genes are located on chromosomes, which are long linear strands of DNA So the cell has all the information it needs to create NEW cells!

4. On the back of your mitosis worksheet: PROPHASE METAPHASE ANAPHASE TELOPHASE

5. PROPHASE Chromosomes have made a copy (replicated) and are now visible

6. METAPHASE Replicated chromosomes line up in the centre of the cell

7. ANAPHASE The identical chromosomes separate and begin to move toward opposite ends of the cell

8. TELOPHASE Chromosomes are harder to see as a membrane forms around them Now what happens?