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And then your dad has an x and a y-- I should do it in capital-- and has a Y chromosome. What are all the different combinations of offspring?
I'm not an expert here, but the general notion is that he became upset with her that she wasn't producing a male heir.
Although you might have different versions of eye color on either one and that determines what you display.
But these are just kind of the standard genes that have nothing to do with our gender.
How could they code for the same thing when the blue one is short and the brown one's long? And the long one right here, it's been the convention to call that the x chromosome. And the blue one right there, we refer to that as the y chromosome. So this nucleus that I drew just here-- obviously you could have the whole broader cell all around here-- this is the nucleus for a man.
And to figure out whether something is a male or a female, it's a pretty simple system. So if you have an x chromosome-- and we'll talk about in a second why you can only get that from your mom-- an x chromosome from your mom and a y chromosome from your dad, you will be a male.
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And then your dad is going to donate either the X or the Y. But a very interesting and somewhat ironic fact might pop out at you when you see this.