Tom dyed his hair brown.

Here's a tooth that looks kind of suspicious, right?

There are quite a few hardtops around town, lieutenant.

Yup, that's right.

Who do you ask it to?

Brown overcoat.

The yellow ones with light brown trim.

Now what happens if this guy tells the truth?

That's why we look different.

She's short, very pretty.

Grey Poupon came along, with a Dijon.

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.

So let's say we look at chromosome number I'll just call this chromosome number 3.

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

His shoes are brown.

(Laughter)

Red, green, blue, yellow, orange, baby blue, purple, pink, mauve, gold, brown, mocha, avocado, adobe gold!

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

All this field of view is a single strand of DNA.

This is its chromatin form.

This is the debt.

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

MAN ( over radio )

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

That cat is brown.

Maybe the brown was better.

The wheels are yellow the upholstery's brown

It didn't have that crossover occur.

Then we very carefully melt onto the slide.

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

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

That's why we look different.

So let me zoom in on one pair of these.

What color is the top arrow pointing to?

And now we're ready to draw this ellipse.

Thin. She has brown hair.

Mary has beautiful brown eyes.

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.

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.

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.

It now has four chromosomes.