| Term | Definition |
|---|
| mitosis | the process in which the nucleus divides to form two identical nuclei 93 |
| chromosomes | structures in the nucleus that contain DNA 94 |
| asexual reproduction | a process on which new organisms are produces from one parent 97 |
| sexual production | a process in which a new organism is produced when sex cells from 2 parents combine 99 |
| sperm | the sex cell from the male parent 99 |
| egg | the sex cell from the female parent 99 |
| meiosis | the process of nuclear division that produces sex cells 99 |
| fertilization | the joining of an egg and sperm 101 |
| zygote | the cell that forms on fertilization 101 |
| DNA | a chemical (the code that chromosomes contain is in the form of it) called deoxyribonucleic acid 104 |
| gene | the section of DNA on a chromosome that directs the making of a specific protein 106 |
| RNA | a type of nucleic acid that carries the code for making proteins from the nucleus to the ribosomes called ribonucleic acid 108 |
| mutation | any permanent change in a gene or chromosome in a cell 109 |
| clone | an individual that is genetically identical to one of its parents 112 |
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