Transferability paradox in embryo selection

Commercial embryo‑selection services are forcing a concrete reckoning: polygenic scores touted for choosing 'higher‑IQ' or lower‑risk embryos often perform well only within particular ancestry groups, so claims of universal benefit collapse when applied to diverse parentage. That mismatch creates a paradox where selection appears powerful in promotional datasets but yields unpredictable, and potentially inequitable, outcomes in real use. — This reframes embryo selection from a consumer choice to a systemic problem linking genetics, commercial incentives, racialized accuracy gaps, and the need for regulation or disclosure.