You can engineer a prairie vole to become monogamous when it's naturally polygamous.

The hero of the hour!

So here's a typical situation, male meets female, lots of offspring.

Normally the testes should make testosterone, the male hormone.

And what you're trying to look at is the males have claspers, which kind of dangle out behind the back of the shark.

And not only do these genetic males mate with other males, they actually have the capacity to lay eggs even though they're genetic males.

And here's a male.

Third Male

Both are of the male sex.

I look. Both are of the male sex.

And we have testosterone.

What would the heroes of old do in this situation?

And the male ... We're going to see it again.

The hero of the Ashanti Uprising?

The gourd is a feminine aspect the stick is a male.

And I became a school hero.

So we, in experiments, have administered testosterone to men.

INFOCAP is comprehensive and ambitious.

Adult males a huge load.

Who would dare to do that to Ivanhoe?

The psychiatrist Arnold M. Ludwig, for example, argues that just as male monkeys, chimps, or apes automatically begin to assume more responsibility for their particular community once they attain the dominant status of alpha male, human rulers do so as well.

(a) The principle of joint responsibility means that parents must raise their children and the State must help them to perform that duty.

He takes a step back so he's keeping off the other males by splitting his body and comes up on the other side ...

Like I said, pollen carries the male sex cells.

Positively amazing. Here's two males fighting.

Greek'arsenikos' for'male 'or'bold'

The Cemetery of the Anti war Veterans provide the after death s cemetery for Hunanese anti war heroes for free, and it is praised as the last military camp of the anti war veterans .

Put me down for last stag.

Look at this lvanhoe, Mr. McHabe.

So the males will go out, they'll look for females, they'll mate. If they mate successfully, then no offspring.

3.2 Parental responsibility

And the second is a phenomenon that males are very, very good at finding females.

It carries male sex cells from one flower to another.

And as a result, these exposed males lose their testosterone, they're chemically castrated, and they're subsequently feminized because now they're making the female hormone.

It's happened almost entirely without big money behind it.

One man got the CocaCola franchise.

Well, in ancient Rome, impenetrability was the criterion of masculinity.

And after that, the males all die. That's it for them.

When the war ended he found himself a reluctant hero.

Some theorists try to explain this with an alpha male theory of leadership. The psychiatrist Arnold M. Ludwig, for example, argues that just as male monkeys, chimps, or apes automatically begin to assume more responsibility for their particular community once they attain the dominant status of alpha male, human rulers do so as well.

This was another hero generation that brought democracy to the planet.

Advocating, defending, learning from and caring for heroes has become a common practice in the whole society.

And then on the female side, you have the opposite, in which you have these crazy superhero women.

It also happens to be male and, in theory immortal.

Now if that male is carrying a gene which causes the death of the offspring, then the offspring don't survive, and instead of having 500 mosquitos running around, you have none.