A joint research group has demonstrated that the majority of immigration to the Japanese Archipelago in the Yayoi and Kofun periods (between 3000 BCE and 538 CE) came from the Korean Peninsula. The researchers analyzed the complete genome of a ‘Yayoi’ individual and found that, among the non-Japanese populations, the results bore the most similarity to Korean populations. Although it is widely accepted that modern Japanese populations have a dual ancestry, the discovery provides insight into the details of immigration patterns to the archipelago that have eluded scientists thus far. 

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