| A | B |
| shape of DNA | double helix |
| What is DNA | an organisms coded instructions |
| Discovered the double helix structure of DNA | Watson and Crick |
| Building blocks of DNA | Nucleotide (phosphate, sugar and one base) |
| Four bases that make up the genetic code | GCAT |
| Adenine pairs with | Thymine |
| Cytosine pairs with | Guanine |
| Cell organelle where DNA is found | Nucleus |
| In the nucleus there are long structures called chromosomes which contain many sections of DNA called ____ | genes |
| genes code for proteins which controls our ___ | traits |