1. How many cells do you end up with in Mitosis?
Thursday, March 5, Day 1
Agenda
Note
book
1. Please have these
Items on your desk.
Science Starters
Sheet
Science Starter:
How many cells do you end up with in Mitosis?
How many cells do you end up with in Meiosis?
Which of the two processes ends up with cells that
have a complete set of chromosomes?
4. Which of the two processes ends up with cells that
have a half set of chromosomes?

2. T.O.C. Update
Page /5/ Meiosis

3. MEIOSIS

4. Meiosis is the type of:
Cell division by which eggs and sperm are produced.
One parent cell produces four daughter cells.
Daughter cells have half the number of chromosomes found in the original parent cell

5. During meiosis, DNA replicates once, but the nucleus divides twice.

6. Four stages can be described for each division of the nucleus.
Meiosis
Four stages can be described for each division of the nucleus.

7. First division of meiosis
Meiosis I
First division of meiosis

8. First Division of Meiosis
Same as the mitosis.
Cell divides into 2 cells with the same genetic information

9. Prophase I

10. Prophase I

11. Metaphase I

12. Telophase I

13. Second Division of Meiosis

14. Second Division of Meiosis
Prophase 2: DNA does not replicate.
Metaphase 2: Chromosomes line up at the center of the cell
Anaphase 2: Centromeres divide and sister chromatids move separately to each pole.
Telophase 2: Cell division is complete.
Four haploid daughter cells are formed.

15. Definition
Haploid- Having a single set of unpaired chromosomes, as in a germ cell, such as an egg or sperm.

16. Prophase II

17. Metaphase II

18. Telophase II

19. Meiosis

20. Meiosis Animation

21. Differences in Mitosis & Meiosis
Asexual
Cell divides once
Two daughter cells
Genetic information is identical
Creates regular cells
Meiosis
Sexual
Cell divides twice
Four haploid daughter cells
Genetic information is different
Only creates sex cells
E.g. sperm and eggs

22. Comparison Animations