<P> Haplogroup R1b is another very common haplotype in all of Western Europe . However, it is not distinctly linked to Vikings or their expansion . There are indications that a mutant strand, R - L165, may have been carried to Great Britain by the Vikings, but the topic is currently inconclusive . </P> <P> The mitochondrial C1 haplotype is primarily an East Asia - American haplotype that developed just prior to migration across the Bering sea . This maternal haplotype, however, was found in several Icelandic samples . While originally considered to be a 20th - century immigrant, a more complete analysis has shown that this haplotype has been present in Iceland for at least 300 years and is distinct from other C1 lineages . This evidence indicates a likely genetic exchange back and forth between Iceland, Greenland, and Vinland . </P> <P> There is evidence suggesting Y - Haplotypes may be combined with surname histories to better represent historical populations and prevent recent migrations from obscuring the historical record . </P> <P> Cys282Tyr (or C282Y) is a mutation in the HFE gene that has been linked to most cases of hereditary hemochromatosis . Genetic techniques indicate that this mutation occurred roughly 60--70 generations ago or between 600 and 800 CE, assuming a generation length of 20 years . The regional distribution of this mutation among European populations indicates that it originated in Southern Scandinavia and spread with Viking expansion . Due to the timing of the mutation and subsequent population movements, C282Y is very prominent in Great Britain, Normandy, and Southern Scandinavia although C282Y has been found in almost every population that has been in contact with the Vikings . </P>

How far did the vikings travel from their homeland