1. Terms
Homologous –describes the matching chromosome from each parent (one male / one female)
Diploid – term used to describe a cell that contains both sets of homologous chromosomes – 2N
Haploid – term used to describe a cell that contains only a single set of chromosomes – N

2. Terms
Gamete – specialized cell involved in sexual reproduction - sperm or egg
haploid
Tetrad – structure containing 4 chromatids

3. Meiosis
process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell
process by which gametes are formed
1 cell becomes 4 gametes
2 phases: I and II

5. Prophase I
each chromosome pairs with its corresponding homologous chromosome to form a tetrad
Crossing over occurs where parts of homologous chromosomes are exchanged

6. Metaphase I
Spindle fibers attach
Chromosomes line up in the middle

7. Anaphase I
fibers pull homologous chromosomes towards opposite ends of cell

8. Telophase I and Cytokinesis
Nucleus forms and cells divide into 2 cells

9. Meiosis II results in 4 haploid daughter cells N (chromosome number)
Sperm or eggs

10. Prophase II
No interphase between telophase I /cytokinesis and prophase II
All about getting N chromosomes in the gametes, so no replication of DNA

11. Metaphase II

12. Anaphase II

13. Telophase II / Cytokinesis