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moopling
on Oct 16, 2019
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Twitter says it will restrict retweeting world lea...
As someone who has studied biology, there are lots of edge cases where it is far from clear cut what biological gender a person is.
collyw
on Oct 16, 2019
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Very rare cases. And they still usually fall into male and female - XXY chromosomes are male for example.
dragonwriter
on Oct 16, 2019
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Even XY chromosomes aren't invariably male (they aren't even “invariably male or infertile female”, as was believed until fairly recently.)
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