Now, well, number one, we label as the Ddatp, because this is step two, where we use the DD ATP. We take the mixture and we place it into well number one, lane number one. And we allow these to separate based on their masses. Remember, in gel electrophoresis, the smaller our molecule is, the farther down it will move along that gel. So if this is molecule one, Two and Three, this band will be for molecule One. This band will be for molecule Two.