>>11249756>>11249760Jomon/Ainu are old, unspecialized Mongoloids, but genetically 100% Mong, represented by y-DNA haplogroup D, where we can draw the link to Andamanese and Tibetans.
Yayoi are of a specialized Mongoloid type that migrated from Korea, but have origins further south. There is also a third type that migrated through Okinawa, probably linked to Taiwanese Aboriginals.
Modern Japanese people are mostly Yayoi with admixture from the two other types, depending on the region.