Mixed Race Studies

Naia Reborn: See the Surprising Face of a First American

NBC News
2015-01-05

Alan Boyle, Digital’s Science Editor

Timothy Archibald / National Geographic

Researchers and artists have reconstructed the face of a teenage girl who lived 12,000 years ago in Mexico, and it’s not the kind of face a person might typically associate with Native Americans.

The remains of the girl, nicknamed Naia (after the Greek term for a water nymph), were recovered from an underwater cave on Mexico’s Yucatan Peninsula. Naia is regarded as one of the earliest known residents of the Americas — but her skull has a shape associated with African or South Pacific populations rather than the typical Siberian look.

Despite that different look, researchers say Naia is genetically related to Native Americans who came to America later, from Siberia via the Beringia land bridge…

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Dark skin, blue eyes: Genes paint a picture of 7,000-year-old European

NBC News
2014-01-26

Alan Boyle, Science Editor

A 7,000-year-old man whose bones were left behind in a Spanish cave had the dark skin of an African, but the blue eyes of a Scandinavian. He was a hunter-gatherer who ate a low-starch diet and couldn’t digest milk well — which meshes with the lifestyle that predated the rise of agriculture. But his immune system was already starting to adapt to a new lifestyle.

Researchers found all this out not from medical records, or from a study of the man’s actual skin or eyes, but from an analysis of the DNA extracted from his tooth.

The study, published online Sunday by the journal Nature, lays out what’s said to be the first recovered genome of a European hunter-gatherer from a transitional time known as the Mesolithic Period, which lasted from 10,000 to 5,000 years ago. It’s a time when the hunter-gatherer lifestyle was starting to give way to a more settled existence, with farms, livestock and urban settlements.

The remains of the Mesolithic male, dubbed La Braña 1, were found in 2006 in the La Braña-Arintero cave complex in northwest Spain. In the Nature paper, the researchers describe how they isolated the ancient DNA, sequenced the genome and looked at key regions linked to physical traits — including lactose intolerance, starch digestion and immune response.

The biggest surprise was that the genes linked to skin pigmentation reflected African rather than modern European variations. That indicates that the man had dark skin, “although we cannot know the exact shade,” Carles Lalueza-Fox, a member of the research team from the Spanish National Research Council, said in a news release. At the same time, the man possessed the genetic variations that produce blue eyes in current Europeans…

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