Methodology deep-dives, population spotlights, and engineering notes from the Ancestrify team — qpAdm modelling, ancient DNA panels, and how genetic ancestry analysis really works.
2 stories
What a 23andMe or AncestryDNA ethnicity estimate measures, what an ancient-DNA ancestry test measures instead, why the two disagree by design, and how to run the second one on the raw file you already have.
AncestryDNA does not produce G25 coordinates — but its raw data download is the input that becomes one. The emailed-confirmation download flow, what the file covers, and the route from file to coordinate row.