Genetics frames race as ancestry signal

Public conversations increasingly treat ‘race’ not as a single biological category but as a multi‑scale ancestry signal derived from population genetics tools (PCA, admixture) that has different meanings in medicine, identity, and history. This framing shifts disputes from categorical moral claims to arguments about modeling choices, interpretation, and the social uses of genetic facts. — If accepted, this reframing will change how activists, clinicians, and policymakers argue about race — from moral absolutes to contested empirical models with policy consequences.