00:01
This question asks us to describe how gene expression is regulated.
00:05
So the idea behind gene expression is going to go back to our central dogma of biology.
00:14
And that is basically that we have dna.
00:18
It is going to be transcribed into rna.
00:24
That rna is going to be translated into protein.
00:33
And interestingly enough, gene expression, so the expression of, this protein can actually be regulated at many of these steps.
00:42
So it can be regulated at the dna level, the rna level, and the protein level.
00:47
So even when that gene is synthesized, we can still regulate its activity.
00:54
So we'll just give an overview of this and you can choose which two factors you want to discuss in depth for your answer.
01:01
So the first place where the gene can be regulated is on the dna.
01:08
Level.
01:09
And this is basically going to go back to the idea of nucleosomes.
01:18
How tightly is this dna coiled around our histone? so if it's tightly coiled around the histone, it means that we are not going to have that much access to it.
01:28
So it will be harder for us to transcribe it into rna.
01:32
So that is going to be the first point...