In the first section (from the start up to about 55s into the video) of [this amusing YouTube video][1] about the differences between men and women, the following claim is made:

> Why do women distinguish colors better than men?

> The rear part of the eyeball's membrane contains 7 million cone cells.

> With their help, we distinguish between colors.

> Information about color cells is contained in the X-chromosome.

> Women have 2 of these chromosomes. Men have 1.

> This is why **women can distinguish more colors and shades**.

Can women distinguish more colours than men?


  [1]: https://www.youtube.com/watch?v=PTmFdfnevj0