The 23andMe averages: 73.2% African, 24.0% European, 0.8% Native American (United States, published 2015)

SUMMARYThe 23andMe averages: 73.2% African, 24.0% European, 0.8% Native American (United States, published 2015) [Connections: Genetics (honest), Nov 5, 2026]

RECORDBryc, Durand, Macpherson, Reich and Mountain, "The Genetic Ancestry of African Americans, Latinos, and European Americans across the United States," American Journal of Human Genetics 96 (2015), studied "5,269 self-described African Americans" who were 23andMe customers. The published text gives "average proportions of 73.2% African, 24.0% European, and 0.8% Native American ancestry." It states that "one in every five African Americans carries Native American ancestry" (at the 1% level), introduced as "Consistent with historical narratives and family histories." The preprint version says "Over 5% of African Americans are estimated to carry at least 2% Native American ancestry." By state: "more than 14% of African Americans from Oklahoma carry at least 2% Native American ancestry," and "we do not observe higher rates of Native American ancestry in African Americans in Florida." South Carolina, Georgia and Florida are named among "the states with the highest mean levels of African ancestry."

PATTERNNative ancestry in Black Americans is real, widespread at low levels, and highest where the record shows the Five Tribes and Freedmen (Oklahoma)

LENS (WW9)One in five carry the Native line on paper and in the blood, and the families said so first

OPENthese are company customers, not a random sample. The Native signal is measured against a Central and South American reference (next card). The result contradicts the Lens if the Lens means most of a Black American's genome is ancient Southeastern; it does not settle how much Southeastern ancestry is missed

SOURCEBryc et al. 2015, published text (PMC4289685 via PubAnnotation); bioRxiv preprint 10.1101/009340. Primary: Bryc K. et al., Am. J. Hum. Genet. 96 (2015); page range not verified this session.