The Human Genetic History of the Americas: The Final Frontier Dennis H. O'Rourke, Jennifer A. Raff  Current Biology  Volume 20, Issue 4, Pages R202-R207 (February 2010) DOI: 10.1016/j.cub.2009.11.051 Copyright © 2010 Elsevier Ltd Terms and Conditions

Figure 1 Hypothesized routes for original migration into the Americas. The Beringian and Pacific coastal routes (blue and yellow, respectively) may have been roughly contemporaneous following the Last Glacial Maximum (LGM), although contemporaneity is not certain. The more hypothetical northern migration path (red) implies a pre-LGM population movement. These migration paths need not be considered mutually exclusive. Current Biology 2010 20, R202-R207DOI: (10.1016/j.cub.2009.11.051) Copyright © 2010 Elsevier Ltd Terms and Conditions