tmnsquirtle replied to your post: (not a confession) Didn’t J.K Rowling say that the…
What I found on Pottermore was “where families adhered consistently to the practice of marrying within a very small group of fellow witches and wizards, mental and physical instability and weakness seems to result.” But no mention of incest.
alright well theres a little of it I suppose? Still doesnt make much sense to me because there was enough genetic differences between the groups to NOT result in ‘mental and physical instability and weakness’. By science and so by law, second cousins have different enough genetic codes to marry and create offspring. So I’m not sure how purebloods are so closely related its similar to inbreeding. I mean that statement would apply to Molly and Arthur and Narcissa and Lucius even though there isnt any other Malfoys on the Blacks family tree at all, so they’re hardly closely related.
I don’t know, UNLESS this quote is referring only to families who DID do that (like the Gaunts) and not to ‘Purebloods’ as a whole. Then I would understand it.