| A | B |
|---|
| DNA | large molecule contained in chromosomes |
| replication | process by which DNA is duplicated |
| protein synthesis | process by which proteins are made |
| RNA | molecules used in the making of proteins |
| Year DNA was discovered | 1953 |
| James Watson | American scientist who discovered the structure of DNA |
| Francis Crick | British scientist who discovered the structure of DNA |
| Watson and Crick's model of DNA | considered one of the greatest contributions to the field of genetics |
| double helix | structure of DNA |
| nitrogen bases | adenine, thymine, cytosine, guanine |
| adenine (A) pairs with | thymine (T) |
| cytosine (C) pairs with | guanine (G) |
| genetic code | the number and arrangement of base pairs |
| proteins | composed of molecules called amino acids |
| nucleus of a cell | where DNA is located |
