"Classification of the Sami mtDNA lineages revealed that the majority are clustered in a subset of the European mtDNA pool. The two haplogroups V and U5b dominate, between them accounting for about 89% of the total. This gives the Sami regions the highest level of Haplogroups V and U5b thus far found. Both haplogroups V and U5b are spread at moderate frequencies across Europe, from Iberia to the Ural Mountains."