Phylogenetic tree and branch defining mutations for U5b1b1a a branch mainly found in Northern Europe e.g. among sami. To view it is easiest to download and open in your favorite pdf viewer. It is not an official tree but one I use to indentify new mutations in the kits. Many of the mutations that only are found in 2-5 kits are new branches not yet considered as official brances. If you belong to mtDNA haplogroup U5 please join the U5 mtDNA project
A link to the tree can also be found below: