1. Meiosis Cuts # of chromosomes in half
Only occurs in sexually reproducing organisms in the reproductive tissue
Produces sex cells
AKA: Gametes (egg & sperm in animals)
All gametes are haploid
When gametes meet, a zygote (a fertilized egg) is formed
Produces spores in plants and fungi

2. Meiosis 1 diploid cell makes 4 haploid cells
DNA also doubles in Interphase of meiosis
There are 2 stages of Meiosis: Meiosis I & II
In each stage of meiosis, PMAT occurs with minor differences from Mitosis

3. Meiosis Meiosis I: Prophase I: Metaphase I: Anaphase I:
Chromosomes match with their homologue – Synapsis
Paired homologues form a Tetrad
Parts of homologous chromosomes are exchanged between homologues
Called Crossing Over
Genetic Recombination occurs due to crossing over and allows for genetic diversity in the new offspring
Metaphase I:
Tetrads line up on the equator of the cell
Anaphase I:
Tetrads separate; each homologue goes to opposite poles

4. Meiosis Meiosis I: Meiosis II: Telophase I & Cytokinesis I:
Same as mitosis but whole chromosomes are in each cell
Meiosis II:
Prophase II, Metaphase II, Anaphase II, Telophase II, Cytokinesis II:
Same as Mitosis except each cell now only has a haploid number of chromosomes
Division happens again using the 2 cells just created in Meiosis I