00:02
If a dna molecule, usually we draw it like a ladder, but this is like a sideways ladder.
00:09
So here's our dna molecule and we need to take the information in these bases and turn it into an mrna molecule that we can use to take it out of the nucleus and get it to a ribosome and build some proteins.
00:23
But to do that, we have to go through three steps.
00:25
So the first step is initiation.
00:28
If you think about what that word means, generally initiation means to start or to begin.
00:34
So to do the initiation step, we open up the dna molecule so that the ladder gets split in half and we take the rna polymerase and we kind of stick it onto the correct region.
00:50
So this is the rna polymerase, that's an enzyme.
00:57
So it will go to that specific region, the promoter region of the dna molecule.
01:03
And it will attach itself to the dna molecule so that it's ready to go.
01:10
And then the next step is elongation.
01:15
Let me spell that, elongation.
01:21
In the step of elongation, we're taking that dna molecule that we're copying to make the mrna, we're moving that rna polymerase along the dna molecule, kind of like a train running along its tracks.
01:36
And as that rna polymerase moves along, it is going to produce the mrna molecule, sorry, that will match that dna...