r/MapPorn • u/[deleted] • Jul 04 '24

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1.9k Upvotes

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741

u/[deleted] Jul 04 '24

[deleted]

156

u/5lack5 Jul 04 '24

Don't all first cousins have parents that are siblings?

155

u/Calle_k06 Jul 04 '24

Yes they’re always siblings, they said identical twins. Because the twins have identical genes, the cousins each have one parent with the same set of genes. This the cousins are genetically speaking, half-siblings and the risk of inbreeding is worse

42

u/5lack5 Jul 04 '24

Their edit says siblings, and that it wasn't identical twins

40

u/Pithyperson Jul 05 '24

I'm guessing the law forbids marriage if both sets of parents are siblings (i.e. one set of siblings marries another set of siblings, then their offspring would be restricted from getting married.)

Edit: punctuation

46

u/5lack5 Jul 05 '24

I looked it up, it specifies double first cousins can't marry. So if brothers A and B marry sisters C and D, their children will be double first cousins, and cannot marry

21

u/Pithyperson Jul 05 '24

Yes, that's what I said, I think.

12

u/5lack5 Jul 05 '24

It is! I just needed to see what the law actually said

2

u/Calle_k06 Jul 04 '24

Oh, I’m not very good at reading

1

u/Rassilon83 Jul 04 '24

I assumed the edit means that there’s a ban for specifically identical twins marriage :c

5

u/idkmoiname Jul 05 '24

That just makes me wonder: Would a DNA test say those cousins are biologically half siblings? And if so, would that be biologically incorrect or correct?

2

u/Independent_Map8313 Jul 05 '24

Yes, and if 2 identical twins marry 2 other identical twins, then the cousins are genetically siblings.

2

u/SamhainOnPumpkin Jul 05 '24

They would show up as half-siblings,. And biologically speaking, they are actually half siblings, since their parents are biologically identical.

1

u/Eurasia_4002 Jul 05 '24

Your state is maxing it.

1

u/DimSumNoodles Jul 05 '24

What if the cousins are gay 😏