Black hair

The derived EDAR gene arose approximately 30,000 years ago in China.

shows that Paleo-Indians had both variants of the EDAR gene, the derived G-allele and the ancestral A-allele.

tested ancient DNA remains found in the Americas of the individuals named USR1, Anzick-1 and Laranjal-6700 the results showed that they carried the ancestral A-allele.

[citation needed] 11,000-year-old remains of Cuncaicha and Lauricocha individuals from South America share alleles at the highest rate with present-day Amerindians, indicating that the derived G-allele increased in frequency in parallel with the ancestral A-allele.

This protein in turn helps the body's hair follicles to produce the type of melanin called eumelanin.