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Second degree cousins is not that close though. If every generation has three children, that’s 27 persons. I thinks that for most of human history excluding second degree cousins from the acceptable partners pool would have been impossible. Communities were not that big.

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spankmonkey@lemmy.world ⁨1⁩ ⁨week⁩ ago

Second degree cousins

I can’t stop laughing.

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- Enkrod@feddit.org ⁨1⁩ ⁨week⁩ ago
  That’s how it’s phrased in many other languages, german for example.
  
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  - BruceLee@sopuli.xyz ⁨1⁩ ⁨week⁩ ago
    French also
    
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HonoraryMancunian@lemmy.world ⁨1⁩ ⁨week⁩ ago
And if my maths is correct, you only share on average 12.5% of your DNA with them

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- mEEGal@lemmy.world ⁨1⁩ ⁨week⁩ ago
  your math may be wrong, because we have very similar genomes, even compared to complete strangers. hell, even between some species.
  
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  - HonoraryMancunian@lemmy.world ⁨1⁩ ⁨week⁩ ago
    Well, yes. I meant in the sense we share on average 50% with each parent/siblings, 25% with grandparents, etc. I should have said genetics instead of DNA.
    
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  - Knuschberkeks@leminal.space ⁨1⁩ ⁨week⁩ ago
    iirc 90% of dna is the same even between humans and plants. (Don’t quote me on that)
    
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  - porous_grey_matter@lemmy.ml ⁨1⁩ ⁨week⁩ ago
    Of the variable alleles, not all DNA
    
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Danquebec@sh.itjust.works ⁨1⁩ ⁨week⁩ ago
Groups often came together to party and marry people.

There are even rules, like exogamy is common.

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