So let's say those are the germ cells.

No males at all.

If I talked about other species, they might have 10 chromosomes or they might have 5 chromosomes.

And very importantly, with the introduction of sexual reproduction that passes on the genome, the rest of the body becomes expendable.

Now, I want you to just look really close up onto what's happened there.

You can have culture without exchange.

And in fact, this idea that the cells of the reproductive tract are the only place where the Y functions, has led, in turn, to the notion that the genomes of men and women are, apart from the reproductive tract, functionally, maybe even morally equivalent.

And with that... my reproductive and sexual function.

Whether or not which direction they're flipped is completely random, and that's what adds to the variation.

How does evolution do cumulative, combinatorial things?

So in a male, you have some germ cells, so some of these cells turn into germ cells.

Can't you reason with him?

Can't you reason with him?

In a female, they would be involved in the ovaries.

Over time this produced every one of the billions of species of life on earth.

Boy, girl, man, woman?

And the germ cells exist as part of your reproductive organs.

Women usually live longer than men.

Women commonly live longer than men.

Women usually live longer than men.

Women generally live longer than men.

In fact, you could say that the inevitability of the death of our bodies enters in evolutionary time at the same moment as sexual reproduction.

Most of the time, it'll break the organism.

Nassau groupers in Belize in the Mesoamerican Reef.

But at the time multi celled organisms come online, things start to change.

The young men lived in single men's camp.

Women live longer than men in most countries.

It's going to be very challenging to deal with.

And these germ cells, they're the product of mitosis.

That young man is our teacher.

Generally speaking, women live longer than men.

Women tend to live longer than men.

What accounts for the fact that women outlive men?

I wonder why women outlive men.

I wonder why women live longer than men.

The sexual abuse of children.

I know what's on your mind when you're looking at these pictures.

And it's not just kids, it's adults too.

Yeeralparil too lived in the single men's camp.

The penis is one of the male reproductive organs.

But we'll talk more about that in the future.

It is said that women live longer than men.

Man And you, you count that she does it right. (Boy

You've got a seven digit number call out any six of them loud and clear.

Really scramble them up this time, please.