Estudo de DNA revela um terceiro grupo ancestral na população japonesa

14 de maio de 2026

Reportado por IA

Uma análise genética em grande escala identificou um terceiro grupo ancestral anteriormente ignorado no Japão, desafiando a teoria de dupla origem mantida há muito tempo. Pesquisadores associaram a nova ascendência ao antigo povo Emishi, do nordeste do Japão. As descobertas também conectam DNA arcaico de Neandertais e Denisovanos a condições de saúde modernas.

Cientistas do Centro de Ciências Médicas Integrativas do RIKEN sequenciaram os genomas completos de mais de 3.200 pessoas em sete regiões, de Hokkaido a Okinawa. O estudo, publicado na Science Advances, revelou que a população do Japão descende de três fontes ancestrais principais em vez de duas. A ascendência de caçadores-coletores Jomon atingiu 28,5 por cento em Okinawa, mas apenas 13,4 por cento no oeste do Japão, enquanto o componente recém-identificado relacionado aos Emishi concentrou-se no nordeste.

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