|My FTDNA myOrigins results|
|My results from AncestryDNA, trace amounts are in outline|
What it's also probably telling me is that because my British DNA is so influenced by Viking and Germanic DNA, it is almost indistinguishable from those categories. Depending on the control group samples each company used, my British, Scandinavian, and German DNA will therefore naturally have different percentages and it doesn't mean one is more accurate than the other. When you have two or more groups of peoples who are genetically too similar to one another to tell them apart, it's going to be difficult, if not impossible, to accurately place their DNA. It's probably never going to be accurate to say I'm "this much British and that much Scandinavian" - it will be more accurate to say that apart from my Italian heritage, I mostly come from Viking and Germanic blood, regardless of whether that DNA has more recently come from Britain or Norway or Germany.
At least both companies seem to agree that I am about 1/3 Italian - although with FTDNA, I am getting similar influences from the Middle East. According to them, I am 17% Middle Eastern but of course, I know there is no one in my tree from the Middle East. What's happening here is very similar to what is happening with my British DNA - that the Italians, particular southern Italians and Sicilians (which are a known part of my ancestry), have had genetic influences from the Middle East and therefore some of their DNA can be very similar. Even AncestryDNA identified trace amounts from the exact same regions of the Middle East - just one example of why you shouldn't always dismiss those trace amounts as statistical noise.
While it's easy to lump those Middle Eastern results into my Italian ancestry because I have no Middle Eastern ancestors, it's more difficult to distinguish my British, Scandinavian, and German DNA because I do have ancestors from all of those places. But if you take a look at the two maps above and ignore the percentages for a moment, it's interesting to see how almost all the circled regions are the same from both companies. They've both identified "West Europe" or in this case, my German heritage. They've both identified my Scandinavian - or Norwegian heritage. They both identified some small amounts from Finland/NW Russia which I think is coming from an influence on my Norwegian ancestors. And they've both identified my Italian DNA with it's Middle Eastern influences. The only thing missing from FTDNA is a circle around the British Isles, which I think I've been able to explain, and the fact that AncestryDNA's results has less than 1% from Asia South, which is essentially India, but I'm pretty sure this is just statistical noise or somehow again related to my Italian ancestry.
Still, FTDNA results like this can be very misleading for people who don't take the time to consider these possibilities. Equally, Ancestry.com's "trace" amounts of my Scandinavian DNA might be misleading too, when it may be higher than that. There is so much to consider and my varying percentages from these two companies just goes to show that DNA is not such an exact science yet after all.