This is its chromatin form.

You have your two chomosomes, each made with sister chromatids, each made with two sister chromatids.

This will then go onto a robot that's going to apply one of those stains to it.

Remember, in interface, even though I drew it this way, they don't exist in this state, the actual chromosomes.

Even though we have two chromatids, one for each chromosome, now we have four chromatids, two for each chromosome, we still say we only have two chromosomes.

It's not like one is getting two versions of a gene and the other is getting two versions of another gene.

It now has four chromosomes.

It's fuckedup chromosomes.

When we talk about meiosis, we have to be careful to show the homologous pairs.

So it's analogous to anaphase in mitosis, but the key difference is you're pulling apart homologous pairs.

It didn't have that crossover occur.

Then we very carefully melt onto the slide.

So let me say it has this chromosome right here and then

They're being pulled apart, but they're being pulled apart the homologous pair is being pulled apart, not the actual chromosomes, not the chromatids.

And just like in mitosis, as soon as the sister chromatids are split apart, they are now referred to as chromosomes, or sister chromosomes.

He gets split up into two chromatids, which we are now calling chromosomes, or sister chromosomes.

In a human's case, you would have 46 of them.

And then let's say that last one actually helps to determine my gender, or it fully determines my gender.

Now we're in metaphase, and metaphase really is just an aligning of the chromosomes, so all of the chromosomes are going to be aligned at the center of the cell.

Wool takes a dye well.

I got from my dad.

Let me do it in blue.

Let me just cut and paste what I have. I have this one, this chromosome right here.

Chimpanzees have two sets of 24, or 24 pairs of chromosomes.

Rhesus monkeys have 21 pairs of chromosomes.

I wanna run a kleihauerbetke

So I have one chromosome from my dad, and it's made up of two chromatids, so it's already replicated, but we only consider it one chromosome, and then I have one from my mom in green.

But we're going to focus on the region labeled red here and it's the interface between the dynamic scaffolding and the chromosomes.

Sometimes this is called a tetrad because it has four chromatids in it, but it's in a pair of homologous chromosomes.

It's just growing, accumulating materials and building itself out, and then it actually replicates its chromosomes.

Let me see, it'll look like this.

We get one from mom, one from dad.

Once again, we're not even in mitosis yet.

This is the reality.

So I had that one chromosome there, and then I have another one here.

And the first chromosome we built in 2008 the 500,000 base pair one we simply assigned the names of the authors of the chromosome into the genetic code, but it was using just amino acid single letter translations, which leaves out certain letters of the alphabet.

Chromosome one top left, bottom right are the sex chromosomes.

And in this scenario, I want to imagine that, in one case, the sperm is carrying a Y chromosome, meeting that X chromosome of the egg.

There's just a gazillion of them that are all duplicates of the cell, and they all contain the 2N number of chromosomes, the diploid number of chromosomes.

Tom dyed his hair brown.

So again, here we are at that equator moment.

So if that's my cell, that's my nucleus right here.

So let's say I have let me do it in appropriate colors.

So this is the one I got from my dad.

So let me just focus on maybe these two right here.