00:01
So in this video we're going to be talking about two different types of chromatin and then also some components of chromatin.
00:08
So our first component is going to be right here and these are called histones.
00:14
And basically they're just proteins that dna wraps around so it's able to pack tightly.
00:19
So it's not actually genetic material.
00:21
It's just a protein that this dna can wrap around.
00:25
And this comes into play when we're talking about eukromatin and heterochromatin because depending on how tightly the dna packs on these histones determines whether the dna is going to be active or inactive.
00:38
So this first portion of the dna is called uchromatin.
00:44
And you can see that the dna is loosely packed and you've kind of got these open areas right here of the dna.
00:51
And these are important because this allows accessibility for transcription machinery to come in.
00:58
So uchromatin is what they would call active dna.
01:04
And it's easily transcribed...