Methodology deep-dives, population spotlights, and engineering notes from the Ancestrify team, qpAdm modelling, ancient DNA panels, and how genetic ancestry analysis really works.
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Iceland was empty until about AD 870 and settled within sixty years by Norse and Gaelic founders. Settlement-era genomes, a measured sex bias, eleven centuries of drift and the world's most complete genealogy explain why Icelanders today are more Norse than the people who founded them.
Finland is the Nordic country that does not fit the Scandinavian mould: an east to west divide sharper than most national borders, a Siberian-related layer that arrived in the Iron Age, a founder bottleneck, and a Swedish-speaking coast. What ancient DNA shows about Finnish ancestry, and why Finnish genomes model poorly with purely western sources.