人类有多少种生理性别？你的性别是由什么决定的？How many biological sexes are there in humans? What determines your gender?

基因型XY的“他”，为什么会长成女性模样？天真烂漫的“她”，为什么会在12岁时突然变成男人？已为人父母的“TA”，竟然同时拥有男女两套生殖系统！人类的生理性别究竟藏有多少秘密？你的性别是由什么决定的？敬请观看本期柴知道，让我们共同探寻人类性别背后的科学真相……
Why does “he” of genotype XY grow into a female appearance? Why did the innocent “she” suddenly become a man at the age of 12? “HE” or “SHE“ who is already a parent has both male and female reproductive systems at the same time! How many secrets are there in human biological sex? What determines your gender? Please watch this video, let us explore the scientific truth behind human gender…

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