00:01
In order to answer this question, let's talk about myiosis.
00:03
It says during all genesis in an animal species with a haploid number of six, so you have a halfloid number of six, one diet undergoes non -disjunction during myiosis two.
00:13
Following the second myotic division, this diet ends up intact in the ogum.
00:18
It says how many chromosomes are present in, and well, we have many questions.
00:22
Remember that in myosis, normally you start with a diploid cell, and during myosis one, you're going to produce two haploid cells.
00:30
Let's suppose that in this case you have the heterozygous genotype.
00:37
In very, very, very general terms, during myiosis 1, the dominant a is going to move here and the excessive is going to move here.
00:43
Just look it by this, okay? in general terms, remember.
00:46
And during myiosis 2, what happens here is that you're kind of replicate this a and one copy is going to move here and the second copy is going to move here.
00:55
So you have dominant a, dominant a, dominant a, excessive a, and excessive a.
01:00
So this is what you have during a normal meiosis.
01:04
Now, what is a diet? this is a normal chromosome, but when your chromosome develops dna replication before entering myosis or mitosis, you're going to have this.
01:13
And this is a diet.
01:16
Now, it says that there is a non -disjunction in myosis 2.
01:23
So let's suppose that you have a non -dischension here in myiosis 2.
01:26
If you have a non -dischunction here, instead of one copy moving here, another copy moving here, both copies are going to move here.
01:36
And you get zero here and two recessive al -ins in this case.
01:41
Okay, so you have n, n, n plus one, and n minus one.
01:47
And it says, for example, if you had your diet here, let's only show one diet, okay? this is representing this chromosome here or this diet here.
02:00
During myosis one, what happens is that this diet is going to move here...