Some awkward science facts for bigots.
My husband has taught human reproduction and development to the Cambridge medics for over three decades. When people start banging on about "only two biological sexes" he starts with "which sex: genetic, hormonal, or gonadal"?
Biological sex is not binary. www.scientificamerican.com/article/sex-...
Biological sex is not binary. www.scientificamerican.com/article/sex-...
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