River valleys helped shape current genetic landscape of Han Chinese

The Han Chinese are the world’s largest ethnic group, making up 91.6% of modern-day China. Now, in a new study drawing from the largest study to date of three generations of 21,668, unrelated Han Chinese DNA samples, spread out over all provinces, lead author Qing-Peng Kong and his team, of the Kunming Institute of Zoology have shown the importance of how the three main river valleys in China contributed to Han genetic diversity.
Source: EurekaAlert, https://www.eurekalert.org