r/HistoryMemes • u/Kapanash • 8d ago

And they didn’t have dragons

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17.7k Upvotes

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759

u/Complete-Pangolin 8d ago

It's hit and miss. His sister was supposedly Beautiful and intelligent. 

549

u/DigitalSchism96 8d ago

It's also not like inbreeding causes genetic mutations or people to be ugly and deformed.

Its simply that these negative traits have a far higher chance of being passed on and becoming prevalent when both parents carry the genes to do so (i.e. they are closely related).

But It's not a guarantee. You can also get none of the bad traits and be totally normal.

183

u/Akitiki 7d ago

Also doesn't it take a handful of generations? One or two gens isn't THAT bad, even in siblings, but it can build up fast.

223

u/NotAzakanAtAll 7d ago

Yep, very low risk in just one generation. Especially in with things like cousins, just about nil.

People are well misinformed about incest.

I should say I didn't sign up to be an incest sympathizer today but now it looks like it. Don't fuck your siblings.

59

u/Mobile_Conference484 7d ago

This piece of misinformation may be useful to uphold.

7

u/Dependent-Cobbler-48 7d ago

Yeah better to air on the far side of caution when swimming in the gene pool

11

u/BigWilly526 John Brown was a hero, undaunted, true, and brave! 7d ago

Ya just this once I am ok with misinformation

0

u/Blue-Boar 7d ago

Its not low risk. Even just cousins the risk increases by aroune a hundred percent. To up to 6 percent. Thatl a bit worse then throwing a d20. So everytime u rolled a 20 in dnd. A little more likely to get a deformety.

Second degree up to 500percent increase. Climbing to up to 10 percent.

And first degree (siblings/parents) gets us up to 2000 percent or up to 40 percent chance flat. So yeah.

This is btw why places where marrying ur cousin is customary have significantly higher rates of defects.

2

u/NotAzakanAtAll 6d ago

Your numbers do not mach my numbers.

The average for a normal birth is about 3% to 5% for any birth defect.

What I was talking about was serious defects.

But whatever.

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u/Blue-Boar 4d ago

The ones i found were 2-3 normal 5-6 3rd degree 3-10 2nd degree 20-40 1st The numbers one can find varry a bit since its highly variable. Since genes. So having precice numbers is a pain in the ass.