| Term | Definition |
| body cell | cells that make up most of the body, such as the skin,blood, bones, and stomach |
| cancer | a disease in which body cells reproduce at an abnormally fast rate |
| meiosis | a kind of cell reproduction that forms eggs and sperm |
| mitosis | a kind of cell reproduction in which two identical cells are made from one cell |
| ovary | the female sex organs that produce eggs |
| polar body | a small cell formed during mitosis in a female |
| puberty | the stage in life when a person begins to develope sex cells |
| sex cell | reproductive cell produced in sex organs |
| sister chromatids | the two strands of a chromosome after it becomes doubled |
| testes | male sex organs that produce sperm |