scribblet

Unless, of course, it's not a biological fact.  In which case, he/she was fired for spreading misinformation.

Quote

Because biological sex is far more complicated than XX or XY (or XXY, or just X). XX individuals could present with male gonads. XY individuals can have ovaries. How? Through a set of complex genetic signals that, in the course of a human’s development, begins with a small group of cells called the bipotential primordium and a gene called SRY.

....\

While this is a small overview, the science is clear and conclusive: sex is not binary, transgender people are real. 

It's long, but read the whole article - learn stuff that you didn't know about how people develop sexually.

Oh sure..