| A | B |
| Mitosis | Formation of two nuclei with identical chromosones |
| Sexual reproduction | Reproducton in which a new organism is produced when sex cells from two parents combine |
| Meiosis | Nuclear division that forms sex cells |
| Zygote | Cell that forms in fertilization |
| DNA | Controls cell activity with coded instructions |
| Fertilization | The joining of an egg and a sperm |
| Gene | Segment of DNA controlling production of one protein |
| RNA | A nucleic acid which carries the code for making proteins from the nucleus to the ribosomes |
| Mutation | Any permanent change in genetic material of a cell |
| Insulin | Substance secreted by the islets of Langerhans |