 In the Baltics, R1a1a frequencies decrease from Lithuania (45%) to Estonia (around 30%).There is a significant presence in peoples of Scandinavian descent, with highest levels in Norway and Iceland, where between 20 and 30% of men are in R1a1a.Vikings and Normans may have also carried the R1a1a lineage westward; accounting for at least part of the small presence in the British Isles.