[Harmless Teddy Bear]

I think in terms of genetic studies the Basques are the same as their surrounding neighbors

Only in a "we are all human" sort of way. Other then that, according to the Genographic Project, the Basques share unique genetic patterns that are not found in their non-Basques neighbors.

They appear to be a DNA as well as a linguistic isolate.

[Cronos]

I was wrong. you are correct. I just searched about the Genome project Basque Origins Predate Arrival of Farmers in Iberian Peninsula, DNA Analysis Finds -- fascinating stuff, thank you!