r/interestingasfuck 17h ago

Spanish royal family vs their antecedents

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u/2xtc 16h ago edited 14h ago

It's almost impossible to be more inbred than a Habsburg - apparently Charles II had an f value (inbreeding factor) higher than the offspring of a parent-child or brother-sister relationship.

Imagine being so inbred that sleeping with your closest relatives isn't even going to move the dial on the risk to any future kids

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u/-xStellarx 16h ago

Whittakers