Adenine (A), Thymine (T), Cytosine (C), and Guanine (G), are the bases that activate the DNA. When the G and A are paired and T and C are paired the Double helix structure of the DNA is created. These chemicals store the instructions of what the DNA is going to do. The order that these chemicals are in determines what proteins will be created by the RNA. For more detail about how these chemicals are replicated, return to the article DNA: UNzipped!