Genetic history of the Indigenous peoples of the Americas

The genetic history of the Indigenous peoples of the Americas is divided into two distinct periods: the initial peopling of the Americas from about 20,000 to 14,000 years ago (20–14 kya), and European contact after, about 500 years ago. The first period of the genetic history of Indigenous Americans is the determinant factor for the number of genetic lineages, zygosity mutations, and founding haplotypes present in today's Indigenous American populations.

Source: Wikipedia — Genetic history of the Indigenous peoples of the Americas (CC BY-SA 4.0)