You can be XYY and doctors will shorten that informally to YY. https://www.webmd.com/a-to-z-guides/what-are-yy-chromosomes
No idea but it must make OP chuckle
You can be XYY and doctors will shorten that informally to YY. https://www.webmd.com/a-to-z-guides/what-are-yy-chromosomes