So when we reproduce we replicate DNA molecules and pass those replicated identical DNA molecules or actually not identical, they are slightly different because of different types of variations but we pass them down into the offspring. And the second function of RNA is to actually assist in protein synthesis. So we have different types of RNA molecules. For example, we have messenger RNA mRNA and that's the molecule that is actually used directly to build proteins. But we also have other RNA molecules that assist in the process. For example, we have tRNA and RNA molecules that essentially assist the ribosome in forming that protein.