DNA speaking, pretty much everyone in the USA is mixed race at some point in their history, even the Black woman who swears she would never date outside her race. Got news for you lady, someone in your family line already did at some point in history. Deal with it. Humans are humans, if you find one you love, be happy about it and stop worrying about what they look like. In the end all that matters is if you're happy. Simple concepts, really.
https://www.science.org/content/article/genetic-study-reveals-surprising-ancestry-many-americans
"You see all of those different ancestries in each of these groups," Bryc explains. The average African-American genome, for example, is 73.2% African, 24% European, and 0.8% Native American, the team reports online today in The American Journal of Human Genetics. Latinos, meanwhile, carry an average of 18% Native American ancestry, 65.1% European ancestry (mostly from the Iberian Peninsula), and 6.2% African ancestry."
At least 3.5% of European Americans carry African ancestry, though the averages vary significantly by state. In South Carolina and Louisiana, about 12% of European Americans have at least 1% African ancestry. In Louisiana, too, about 8% of European Americans carry at least 1% Native American ancestry.
In many states, the history of the region is written in the genomes of its current residents. Louisiana, for example, was a trading hub where different populations met and mingled. But sometimes the stories are even more specific. Oklahoma is the state where the most African-Americans have significant Native American ancestry, Bryc notes. That contact can be traced back to the Trail of Tears, when thousands of Native Americans were forcibly relocated to Oklahoma, which was also home to a significant number of black slaves. "You can really see historical events and historical migrations in the genetics," Bryc says. "We weren't actually expecting to be able to see that as clearly as we do."
Another way that history shows up in contemporary genomes is in what researchers call a sex bias. By looking at the kinds of DNA that are passed down only by mothers, they can calculate how many of a person's ancestors from each population were male and female. In all three populations, they found the same signal: European ancestors tended to be male, while African and Native American ancestors tended to be female. That imbalance reflects the fact that for much of U.S. history, European men were the most aggressive colonizers, Mountain says. This mixing seems to have started almost immediately after the first European colonizers and African slaves arrived in North America. "It suggests that really early U.S. history may have been a time of a lot of mixture," Bryc says.
