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| Frage | Antworten |
| What does a gene do? | They carry the instructions that control how you develop and function. |
| What are genes? | A gene is a section of a very long molecule of a chemical called DNA |
| What does DNA stand for? | Deoxyribonucle acid |
| What is a chromosome? | Lengths of DNA coiled and packed into structures called chromosomes. |
| How many genes are in a chromosome? | Between 20 000 and 25 000 |
| What are strands of DNA made of? | Four chemicals called bases, as well as phosphate groups and sugar molecules. |
| Functional Proteins | Enable the body to function. Examples include enzymes, antibodies and hormones. |
| Structural Proteins | Gives the body structure, rigidty and strength. Examples include collagen in ligaments and keratin in skin. |
| What controls our characteristics? | A combination of genes and the environment |
| Genotype | A persons genetic make-up. It can refer to the whole of an individual's genes or the genes for a perticular characteristic. Usually written as two letters e.g. BB |
| Phenotype | A persons observable physical features, e.g. build, pr a single characteristic. The Phenotype will depend on the persons genes, but may also be affected by how these interact with the environment. |
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