this post was submitted on 13 Sep 2025
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Explanation for those whose high school bio lessons were subpar: every fetus starts out with genitals that appear to be a vagina with a disproportionately large clit. If you've got the SRY gene on one of your chromosomes, the clit becomes your dick and the proto-labia fuse and become your balls. This is why your balls (if you have them) have a vertical seam at their midsection; that’s where your labia fused. So, it's often said that we all start out female.

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[–] acockworkorange@mander.xyz 18 points 3 days ago (1 children)

It's not a huge clit, it's actually small, it's just the fetus hasn't grown into it yet

[–] ThisIsAManWhoKnowsHowToGling@lemmy.dbzer0.com 8 points 3 days ago* (last edited 3 days ago) (1 children)

Good point. I've only seen pics under massive magnification so it always seemed super disproportionate to the rest of the body. Just did a quick edit to reflect this

[–] acockworkorange@mander.xyz 7 points 3 days ago (1 children)

It was a joke, my good Sir.

But you were also right

[–] trxxruraxvr@lemmy.world 16 points 3 days ago

Afaik the proto-labia become the scrotum, not the balls. The ovaries become testes in men.

[–] Skyrmir@lemmy.world 3 points 3 days ago

So block SRY gene expression, and humans go extinct, got it.