The history and
geography of human genes, (Luigi Luca Cavalli - Sforza, Paolo Menozzi, Alberto Piazza) p. 229 suggests that only the Bering passage was ever employed by indigenous populations to transit the circle, casting extreme doubt on an Arctic as ice - free in the distant past as it now is.
The new scheme to chart the «history and
geography of human genes» through DNA analysis of far - flung «primitive» peoples rests on the mistaken assumption that such exotics do not have a history, says Marks.