>>4013925actual geneticist here, 23 & Me and any other genetic ancestry services are utter bullshit
There is no such thing as a "percentage" of race. 99.5% of all human DNA is identical, the remaining .5% is usually morphological deviation (height, weight factors, genetic mutations, etc), and a tiny sliver of all human DNA, maybe .01%, contributes to what we normally consider racial features, almost all of which are purely cosmetic. That .5% of morphological deviation is actually more diverse within races than between races when you compare them- there are tall Asians and there are short Danes.
Anyway, there is literally no way to know what "percentage" of your racial features are derived from a specific region or race, and the genes they use as markers for a given race can be wildly inaccurate. The gene for lactase persistence into adulthood, which, if you have it, allows you to digest lactose as an adult, is present in every race, even Native Americans, who were separated from any kind of lactose-containing dairy products for at least 15,000 years. This gene is much more prevalent in European populations (because cheese) and in Indian populations (because cows and dairy hold a very special religious and cultural status) than it is in Native Americans or Aborigines, but it isn't totally absent.
The point is, if you were to do one of these genetic ancestry tests on a Native American around 1500, you would find a suspicious percentage of "European" ancestry, because these tests are bullshit and wildly misrepresent what DNA actually is.
DNA is not a goddamn ledger of who fucked who and where said cavemen fucked, it is a set of instructions that is constantly evolving and often has huge sections that serve no useful purpose. To claim that Europeans have a unique set of genetic characteristics found in absolutely no other racial groups on Earth is not only ridiculous, but pretty fucking unlikely.
