[TexasGator]

“XY = Male
XX = Female”

XXY = ?

[Stormdog]

“XY = Male
XX = Female”

“XXY = ?”

XXY = Klinefelter syndrome

[SnuffaBolshevik]

XXY = ?

X²*Y

(Sorry). ;)

[WayneS]

Genetic Mutation.

People with this very rare mutation, as well as those with XYY, can have legitimate issues with “gender identity”, as well as possibly having a need for some type of surgery, depending upon the physical manifestations of the mutation.