| A | B |
|---|
| Meiosis | Making of Gametes |
| Mitosis | Making of body cells |
| Gametes | Sex Cells, eggs and sperm |
| n | Gametes |
| 2n | Diploid, body cells |
| Body Cells | Somatic Cells |
| Genetically unique cells | Gametes |
| Genetically identical cells | Sobatic or body cells |
| One cell develops 4 uique cells | Meiosis |
| One cell develops 2 identical cells | Mitosis |
| Crossover occurs in this stage | Prophase 1 |
| Prophase 1 | Homologous Chromosomes, or tetrad, exchange segments of DNA |
| Metaphase | Homologous chromosomes line up in the middle of the cell |
| Anaphase 1 | Homologous chromosomes are pulled to opposite ends of the cell |
| Telophase 1 | Homologous chromosomes are at opposite end of the cell and may turn into chromatin |
| Meiosis goes through PMAT | 2 times |
| Mitosis goes through PMAT | 1 time |
| PMAT | Prophase, Metaphase, Anaphase, Telophase: the splitting of the cell nuclei |
| PMAT 2 | Cells divide again making a total of 4 cells. Their is no crossover in Meiosis 2 |
| Why does meiosis create genetic variation? | Cross-over, Independent assortment, Random Fertilization |
| From one spermatogonium cell | 4 sperm are made |
| From one oogonium cell | 1 egg and 3 polar bodies are made |
| The egg is large inorder to ... | provide food for the fertilized egg |
| Eggs are produced in the | ovaries, most of them before birth. |
| Sperm are produced in the | testes at the onset of adolescence and through the rest of the man's life |
