DNA-studie avslöjar tredje förfädersgrupp i Japans befolkning

14 maj 2026

Rapporterad av AI

En omfattande genetisk analys har identifierat en tidigare förbisedd tredje grupp av förfäder i Japan, vilket utmanar den länge rådande teorin om dubbelt ursprung. Forskare har kopplat det nya genetiska arvet till det antika Emishi-folket i nordöstra Japan. Resultaten kopplar även arkaiskt DNA från neandertalare och denisovamänniskor till moderna hälsotillstånd.

Forskare vid RIKEN Center for Integrative Medical Sciences har sekvenserat hela genom hos mer än 3 200 personer från sju regioner, från Hokkaido till Okinawa. Studien, som publicerats i Science Advances, avslöjade att Japans befolkning härstammar från tre huvudsakliga förfäderskällor istället för två. Jomon-jägare-samlares genetiska arv uppgick till 28,5 procent i Okinawa men endast 13,4 procent i västra Japan, medan den nyidentifierade Emishi-relaterade komponenten var koncentrerad till nordost.

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