00:01
All right, so this one is really about sort of the structure of a chromosome, actually.
00:04
So it gives us a picture of 23 homologous pairs of chromosomes, but asks us to just sort of focus on one.
00:10
And so we have these two chromosomes then.
00:16
And each sort of individual one is a homolog, right? and so homologous chromosomes are chromosomes of the same morphology, right? and so they're both a structure one chromosome, whereas a structure one chromosome and a structure five chromosome would not be a homologue, say.
00:39
So if we also had, if we also had say, like a little structure five chromosome, okay, then this one here and this one here would not be a homologue.
00:57
Okay, so that this be five, but then two within the same structure are homologs.
01:08
Okay, so hopefully that makes sense.
01:10
And the idea being that if they're homologues, they have genes on the same location.
01:14
So our gene for eye color might be here, right? and our gene for height might be here.
01:25
Of course, genes are a bit more complex than just one for every feature, but we sort of get the idea.
01:29
They're going to be in the same location, right? so whereas maybe on gene five here we have our gene for, for, uh, uh, uh, uh, skin color, right? and so you can see then there's no, these two cannot be homologs, right? because the one on the left does not have, does not have a gene for skin, whereas this one on the right does...