>>11401608dna tests work very well for intermediate relations, but incresingly less realiably for ancestry. nobody knows which genes actually unaffected by enviromental conditions and which ones aren't. if you took a hundred thousand swedish people to kongo and don't let them mix up just breed in their own community, a thousand years from now they'd share a lot of characteristics that reminded african people, but would still look entirely different. nobody knows if current ancestry dna tests could determine that they're still swedish, or would mix them up of being african descent.
