Today we attempt to tackle an enormous topic, the science and role of gender in sports.

And joining us now is neuroscientist Heather Berlin, Heather.

Of course, welcome back to playing with science.

Chuck, just in case there are listeners out there who aren't familiar.

Oh, couldn't be familiar with Heather.

Heather is the assistant professor of psychiatry at Icon School of Medicine at Mount Sinai,

and one of StarTalk All Stars and our go-to expert for all things on brain science,

better known as neuroscience.

I am to please.

Okay, so first of all, let's try and put this into some understanding for me when we say

gender and what we mean by sex and the difference.

Usually what we mean by female is you have two X chromosomes, men have an X and a Y chromosome.

And then they go on to express male genitalia on average.

Right, on average.

Some mix, you know, they're some sort of creation.

That's what I'm going to say because all things just start off the same, right?

Yeah.

Then it's the, what's it called the SRI, right?

It's the SRI that actually creates what you just said.

And then there are variations within that that can express things differently inside of

men and women.

So it really isn't as cut and dry as one might think.

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