 Before we even start to consider how information flows from one step to the next step, we might need to think how is the information maintained? Well, maintaining information or spreading it this when I have cell division. And when I have cell division, I'm going to need to turn one copy of DNA into two identical copies of DNA. That happens in two steps. First, I have a DNA spiral and we have a small protein called a helicase, which is literally a small scissor. Untying this double helix into single strands. And these single strands, on each of them, we then have a protein called DNA polymerase that ties up bases to complete the strands so that we then have two double helices. This process is called replication. I'll draw it up here. Then we're staying in sequence space, but we're replicating the structure, sorry for being brief there. You're going to see lots of names like this. So this is a protein related to DNA, right? And then I would think it's polymerase something. So it has to do the ace there at the end. That is an indication that this is an enzyme. It's a catalyst. It's something helping something. A polymerase, it's something that's helping creating many other things. Or in this case, a multimer. So that a polymerase is something that helps create a chain. So it's this small protein, the enzyme sitting there and helping completing one nucleotide bind to the next nucleotide. So we get the two full copies. And that is how we take DNA and turn it into more DNA.