1. Definitions
Diploid Cells—cells that have pairs of chromosomes. There are 2 of each chromosome in diploid cells.
Haploid Cells—cells that have only one of each chromosome. Haploid cells are used for sexual reproduction.

2. Creating Cells for Sexual Reproduction
Meiosis:
Creating Cells for
Sexual Reproduction

3. Prophase I Chromosomes are already copied Centrioles separate
Nuclear membrane breaks down

4. Metaphase I
Chromosome pairs line up next to each other

5. Anaphase I
Chromosome pairs split
Sister chromatids stay connected

6. Telophase I Cell starts to divide in two
Nuclear membranes start to form again

7. Prophase II Cells have one set of sister chromatids
Nuclear membrane breaks down
Centrioles separate

8. Metaphase II
Sister chromatids line up at the middle of the cell

9. Anaphase II
Sister chromatids divide

10. Telophase II Cells start to split in two
Each cell has one set of chromosomes—it is a haploid