And the way that it does it is by breaking these hydrogen bonds between our base pairs. And so now we have these single strands that are exposed. So as our bound helicase moves along the double stranded DNA molecule, it unwinds it even further. Now, the point at which our helicase is actually found at and the point where our unwinding is taking place is known as the fork of replication. So where the location where the helicase actually binds to is known as the origin. But as it moves, this location is known as the fork of replication.