DNA and Babel and human migration
The Genographic Project is project started by, the National Geographic Society, IBM, geneticist Spencer Wells, and the Waitt Family Foundation. The idea is to determine the migration patterns starting in Africa and going to the rest of the world. The project is continuing but they have parliamentary results, which National Geographic describes in some detail. One factor they left out is the fact that their conclusions are based largly on the assumption of Evolution.
The apparent trends showing a migration from Namibia are 100% interpretation. The raw data in this study is a bunch of Mitochondrial and Y-chromosome DNA samples from various parts of the world. From this data it is possible to show which lines are more closely related to which, but to project back to an origin requires making assumptions about where that origin was. Those who did this study made the evolutionary assumption that the origin was in Namibia, however one can also make the Biblical assumption that it started in Iraq. Both are arbitrary assumptions and they produce different directions in some of the the emigrational trends.