Methodology deep-dives, population spotlights, and engineering notes from the Ancestrify team, qpAdm modelling, ancient DNA panels, and how genetic ancestry analysis really works.
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The suffixes on AADR population labels encode how each genome was produced — capture, shotgun, diploid, array — and mixing them carelessly biases f-statistics. What each label means and the selection rules that keep models honest.
What the Allen Ancient DNA Resource is, who curates it, what a version like v66 contains, the difference between the 1240K and Human Origins panels, and how the dataset becomes the reference behind an ancient-DNA ancestry analysis.