Methodology deep-dives, population spotlights, and engineering notes from the Ancestrify team — qpAdm modelling, ancient DNA panels, and how genetic ancestry analysis really works.
31 stories
Global25 fits your coordinate to a mixture and always returns percentages. qpAdm tests a model against allele-frequency statistics and can reject it. A practical comparison of when each one is the right instrument.
What the 25 numbers mean, why scaled and unscaled forms must never be mixed, how a closest-population ranking is computed, what a fit distance does and does not tell you, and the failure modes that make confident results wrong.
Where Global25 coordinates come from, how to get them whether you tested with 23andMe, AncestryDNA, MyHeritage, FamilyTreeDNA or LivingDNA, and how to tell a real coordinate row from a simulated one.
How relative verification from raw DNA files actually works — the kinship coefficient, half-identical and fully-identical segments, telling a parent from a sibling, and where the signal honestly ends.
DNA from ancient Himera reveals a diverse 480 BCE Greek army, distant mercenaries, local soldiers and mobility across the Mediterranean.
The first whole genome from Old Kingdom Egypt reveals deep North African ancestry and an eastern Fertile Crescent connection—with major limits.
Ancient DNA reveals that Punic communities shared Phoenician culture but drew most sampled ancestry from Sicily, the Aegean and North Africa.
Ancient DNA traces Yamnaya ancestry to Caucasus–Lower Volga and Dnipro–Don populations before the great Bronze Age steppe expansion.
DNA from 102 prehistoric Aegeans traces migration into Crete and Greece, Mycenaean-era mobility, family burials and frequent cousin unions.
A 555-genome study traces large-scale Early Medieval migration associated with Slavic expansion, regional admixture and changing communities.
Ancient DNA connects some European Huns to Xiongnu elite lineages while revealing a highly diverse Carpathian Basin population.
Genomes from Ranis and Zlatý kůň date the shared Neanderthal admixture in ancestors of non-Africans to roughly 45,000–49,000 years ago.
DNA from Iron Age Britain reveals matrilocal communities, female-line descent and continuing migration across the English Channel.
A 258-genome study reveals migration, Roman provincial mobility and family life along southern Germany's frontier after imperial rule.
Ancient Etruscan DNA supports local Iron Age origins, genetic similarity to Latin neighbors and major ancestry shifts under imperial Rome.
Ancient DNA reconstructs Avar-period families, marriage networks and neighboring communities with different ancestry across Central Europe.
Fifteen ancient Rapanui genomes challenge a severe pre-European collapse and date Indigenous American-related ancestry to 1250–1430 CE.
DNA from two women at Takarkori reveals a deeply rooted North African lineage and suggests Saharan pastoralism spread mainly through culture.
DNA from 13 early Tarim Basin mummies reveals a genetically isolated local population that adopted dairy, crops and technologies from neighbors.
A 460-genome study reveals large North Sea migration, local integration and regional ancestry change in Early Medieval England.
A study of 15,836 ancient and modern West Eurasians finds hundreds of genes under strong directional selection over the past ten thousand years.
A 200,000-year-old molar from Denisova Cave yields a second high-quality Denisovan genome and reveals at least three distinct Denisovan groups.
Ten genomes from a Himalayan cave reveal a population that was half Tibetan-related and half North Indian-related, mixing from about 2800 years ago.
238 ancient genomes from the Southern Cone reveal a deep central Argentina lineage that persisted for thousands of years with little inward migration.
Ancient DNA from five Pompeii plaster casts overturns the family stories told about them for more than a century.
Genomes from an 11,000-year-old site near Beijing reveal an unknown deep northern East Asian lineage and 2,000 years of change at one place.
A 2026 ancient DNA study traces Albanian ancestry from Bronze and Iron Age West Balkan groups through Roman-era and medieval admixture.
Ancient Balkan DNA reveals Roman-era Anatolian mobility, mixed late-antique migrations and lasting ancestry linked to Slavic expansion.
A 442-genome Viking study reveals regional Scandinavian ancestry, family expeditions, migration and Viking identities beyond genetic ancestry.
What qpAdm computes, what the p-value, standard error and z-score each mean, why outgroup choice decides whether a model is worth anything, and how to read a rejection — with a worked example.
A 2026 study of 102 Deep Maniots finds unusual paternal isolation, Bronze Age-linked lineages, medieval founder effects and diverse maternal ancestry.