Death_Equity

You don't define the norm with characteristics of edge cases. The X and Y chromosome groups define biological sex be it male, female, or intersex.

Some people are born with vestigial tails, does that mean that humans may or may not have tails? No, a few hundred people have been born with a vestigial tail in recorded history.

Some people are born with a cleft pallette, does that mean humans can be born with or without a cleft pallette? No, 1 in 1,600 people are born with a cleft pallette.

1 in 1500 to 1 in 2000 people are born intersex. The other 1499 to 1999 people are XY or XX and 98.5% of those have a gender identity that conforms with their biological sex.

You are daft if you take an XX that identifies as a woman and say she isn't female because her ovaries don't produce an ovum. That woman is a sterile female, not intersex.

Trump has the chosen pronouns of He/Him, don't be a Nazi bigot and tell someone what their pronouns are.

At conception the future sex is determined by the chromosomes that the sperm contributes. Once fertilized, there are either X and X or X and Y, which will be XX and XY once meiosis occurs for the first time.

So technically once fertilization occurs(conception), sex has been determined.