| Term | Definition |
| Natural Selection | Process refered to as survival of the fittest |
| Genetic Engineering | The way products such as insulin are made |
| Meosis | The splitting of cells to create sex cells |
| Gametes | sex cells |
| Phenotype | physical characteristics of an organism |
| Alleles | the different forms of a gene |
| Hetrozygous | term used to refer to an organism that has two different alleles for a particular trait ie. Bb |
| Homozygous | term used to refer to an organism that has two identical alleles for a particular trait ie. BB or bb |
| Niche | an organisms role in its enviroment |
| Continuous Variation | Variation in which individuals cannot be placed into two distinct groups because there is a contiuous range of intermediaties between the two extremes, eg Height |
| Discontuous Variation | There are clear cut differences between groups |
| Enviroment | Phenotype = Genotype + ? |
| selective breeding | Allowing only the organisms with the most desired traits to produce the next generation |
| bio-diversity | differences in species |
| producer | organism which makes its own energy by photosynthesis |