| DNA | deoxyribonucleic acid |
| RNA | ribonucleic acid |
| double helix | the shape of a twisted latter |
| nucleotide | chains of subunits made up of sugar, phosphate and nitrogenoous base |
| deoxyribose | sugar found in DNA |
| ribose | sugar found in RNA |
| A | Adenine |
| T | Thymine |
| C | cytosine |
| G | guanine |
| U uracil | uracil |
| C-G | Pair nitrogenous base |
| T-A | Pair nitrogenous base |
| U-A | Pair nitrogenous base |
| cytosine | bonds with guanine |
| adenine | bonds with thymine in DNA |
| uracil | bonds with adenine in RNA |