1. The process of creating gametes
Meiosis
The process of creating gametes

2. Review of mitosis What is mitosis What are the stages of mitosis?
What is the outcome of mitosis?
Diploid-
Haploid-

3. Meiosis
Cellular process that reduces the number of chromosomes to produce gametes.
What are gametes???
Sperm and Eggs
Human body (somatic) cells have 46 chromosomes. How many chromosomes do sperm cells have? How many chromosomes do egg cells have?

4. Similarities
Mitosis and meiosis are very similar, they begin the same way, but end very differently!

5. Interphase

6. DNA Doubles

7. DNA coils into Chromosomes

8. DNA condenses into Chromosomes

9. Prophase I Homologous pairs find each other

10. Crossing Over
Crossing over is a complicated process that allows an exchange of genes, so that the offspring has more variety.
This will not be demonstrated here.

11. Metaphase I

12. Anaphase I Spindle fibers attach to chromosomes and pull them apart

13. Chromosomes moving apart

16. Telophase I

17. Cell begins to split

18. 2 new cells, exactly the same

20. Prophase II Chromosomes condense one more

21. Metaphase II Chromosomes line up in the middle again

22. Anaphase II Chromosomes begin pulling apart

23. Pulling apart

25. Telophase II

27. 4 Haploid Cells

28. What is the purpose of reducing chromosomes???46
Sperm
Egg +

29. A zygote (fertilized egg) with….92

30. With meiosis, there is a reduction in the number of chromosomes23
Sperm
Egg +

31. 46

32. Animation