Now, what's so special about the termination sequence that it allows this process to basically end? Well, the termination sequence usually codes for a special type of structure on that RNA molecule, for example, a hairpin. And when that hairpin structure is formed, that RNA polymerase molecule will spontaneously dissociate from that RNA molecule. So to see what we mean, let's take a look at the following diagram. So let's suppose that this is the complementary sequence to this gene here. And so this is the three n, because this is the five end and this is the five n here.