ScienceDaily -- Using genetic analyses, scientists have discovered that Northern European populations -- including British, Scandinavians, French, and some Eastern Europeans -- descend from a mixture of two very different ancestral populations, and one of these populations is related to Native Americans. This discovery helps fill gaps in scientific understanding of both Native American and Northern European ancestry, while providing an explanation for some genetic similarities among what would otherwise seem to be very divergent groups.
MORE: http://www.sciencedaily.com/releases/2012/11/121130151606.htm
See also...
Human Genetic Variation Recent, Varies Among Populations
http://www.sciencedaily.com/releases/2012/11/121128132259.htm