And this protein became known as DNA polymerase. In fact, inside our body, we also use DNA polymerase to synthesize replicated DNA molecules. So in this lecture, what we're going to discuss is how the DNA polymerase actually works. And we're going to discuss what the DNA polymerase needs to actually synthesize that DNA molecule during the replication process. So let's begin by looking at the general equation that describes how DNA polymerase actually works. So let's suppose inside our cell, we are replicating the DNA molecule and so far we have N number of nucleotides in our DNA polynucleotide chain.