These tests look for places in your d ana that commonly vary from one person to another. They're called single nucatide polymorphisms or snips, which are like points of interest. So some of these snips might be correlated with certain ealth outcome. These companies will compare you to known data bases of people where they have their d an and they have like a known ancestral home. And what these companies will do is basically fined whe are closely related to in their data bases,. From there, they kind of make guesses of like, you know, your dana looks like people who are from italy, but you also have dana that looks like people from germany