UCL {Ans: Autosomal tests also provide information about an individual's "ethnicity" by identifying sections of the DNA that best match reference databases of modern populations with geographical or ethnic labels. Ethnicity tests are better called biogeographical ancestry tests or admixture tests (your "ethnicity" is a social category that may not accurately reflect your ancestry).}Atlantic {Ans: Yet since the dawn of the genomic revolution, sociologists and historians have warned that even seemingly benign genetics research can reinforce a belief that different races are essentially different—an argument made most famously by Troy Duster in his book Backdoor to Eugenics. If a genetic test can identify you as 78 percent Norwegian, 12 percent Scottish, and 10 percent Italian, then it's easy to assume there is such thing as white DNA.}Slate {Ans: In the end, these comparisons are a fun but ultimately unreliable way to think about the possibilities of whom your ancestors might have been, rather than definitive proof of your ethnic background.}Atlantic {Ans: In a survey of over 500 participants, she found that reading about DNA ancestry tests increased one's belief in essential differences between racial groups. And one group intensely interested in getting DNA ancestry tests? White