1. MEIOSIS

2. Number of Chromosomes Somatic Cells (Body Cells) Diploid Cells
total # of homologous chromosomes chromosomes
FLY pairs
CAT pairs
ONION pairs
HUMAN pairs

3. 4N
FERTILIZATION

4. Meiosis
A form of cell division that makes haploid daughter cells from a diploid parent cell.

5. Recap: Homologous Chromosomes
Identical
Gene
For eye
colour
Gene
For eye
colour
Homologous chromosomes code for similar information but perhaps different variations
Eg. Both code for eye colour: Dad for brown eyes
Mom for blue eyes

6. PROPHASE I

7. Crossing-Over

8. METAPHASE I
How are the chromosomes lined up differently here compared to mitosis metaphase?

9. ANAPHASE I
Compare with anaphase in mitosis

10. TELOPHASE I Are the new two cells formed genetically identical?
Are they haploid or diploid?

11. PROPHASE II

12. METAPHASE II How does this compare to metaphase I of meiosis?
How does this compare to metaphase of mitosis?

13. ANAPHASE II

14. TELOPHASE II

15. SPERMATOGENESIS

16. OOGENESIS