PDA

View Full Version : What does "Scandinavian" mean in Geno 2.0 Next Gen's British Isle reference pops.?



leo76
05-24-2016, 06:40 AM
Long story short, the descriptions that Geno 2.0+ gives (https://genographic.nationalgeographic.com/reference-populations-next-gen/) for the Scandinavian percentages in its English and Scottish reference populations seem to suggest that those admixtures were ancient and endemic (ie, hunter-gatherer), while in the Irish population, that they come from the Vikings.

What gives? Here's what I mean, using their own language:

British (United Kingdom):
"The dominant Great Britain and Ireland and smaller Scandinavian components reflect distinct remnants from early settlers in northern Europe, hunter-gatherers who arrived there more than 30,000 years ago."

Kinda seems like it's saying that Scandinavian genes were in Britain all along, right?

Scotland
"This population is similar in genetic composition to our reference British population (England), yet the Scottish group shows greater influence from populations to the north, like Scandinavia and Arctic groups. The large Great Britain and Ireland component as well as the Scandinavian component are remnants from some of the first settlers of northern Europe, whereas the smaller components from mainland Europe show influence from migrations to the island after the arrival of agriculture to Europe some 8,000 years ago."

Again, seems like it's saying that the Nordic genes in Scotland are prehistoric.

Finally...

Ireland
"The large Great Britain and Ireland component reflects the genetic and cultural isolation of groups on the island for millennia after the early Holocene retreat of the glaciers that covered Northern Europe. The large Scandinavia component reflects the historical influence of the Nordic groups on Ireland..."

...something that makes sense.

So what did Geno 2.0+ do here? "Fold in" the Viking influence on England and Scotland into language about "remnants of first settlers"? Why gloss over the Viking conquest of Great Britain, but then mention it with respect to Ireland?

Or am I missing something about their genetic profiles?