I find it interesting that some sources claim haplogroup I is dominant among Nordic populations. From reliable family sources my roots are about as ‘deep Viking’ as they come, yet check in with R1b.
Am wondering if this has anything to do with the 2 similar but not identical groups of Norse, one blond and blue eyed, and the other dark haired but either blue or dark eyed, that make up the Norse of today? (I am the dark haired blue eyed latter, but have children that match the former.)
There are arguments about which is the ‘true’ Viking gene, R1b or ‘I’. I think they’re both.