The data would be especially of value to scientists studying distinct subpopulations with unique health risks. (sciencedaily.com)
Further note that microevolution produces subspecies (i.e. distinct subpopulations). (religion.blogs.cnn.com)
The team suggests that a group headed south into North America about 20,000 years ago and only afterward split into distinct subpopulations, perhaps between 14,500 and 17,000 years ago, dates that fit with previous studies. (sciencemag.org)