Admixture Calculator

Eurasia K20

**Eurasia K20 — Modern + Ancient admixture snapshot** Quickly quantify genome-wide ancestry against 20 curated modern and ancient components spanning Eurasia, Africa, Oceania and the Americas. Designed for hobbyists, genealogists and researchers, it highlights Steppe, Neolithic farmer, Siberian, East/Southeast Asian, South Asian, Papuan, African and Native American affinities to contextualize both recent and deep ancestry.

20 Components

World Target Region

Eurasiandna Author

Modern & Ancient Era

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Chapter I

Calculator Details

Comprehensive information about this admixture calculator

Author Eurasiandna

Era Modern & Ancient

Components 20 Populations

Target Region World

Created November 2022

Eurasiandna

Calculator Creator

About This Calculator

**Eurasia K20 — Modern + Ancient Admixture Calculator** This calculator estimates an individual's autosomal ancestry proportions against 20 curated reference components spanning modern and ancient Eurasian, African, Oceanian and American diversity. It is built for anyone curious about deep and recent ancestry: hobbyist genetic genealogists, population geneticists, students, and researchers performing broad comparative analyses. What this analyzes - Genome-wide autosomal SNP data compared to 20 reference populations (modern and ancient) to produce proportional ancestry estimates. - Components capture major demographic signals such as Steppe, Near Eastern, European farmer, Siberian, East and Southeast Asian, South Asian, Papuan, Sub‑Saharan African, and Native American affinities. Reference components (K=20): NE_ASIAN, N_AMERINIDIAN, SSA, EEF, SE_ASIAN1, S_INDIAN, SHG_WHG, S_AMERINDIAN, KHOISAN, SW_ASIAN, KALASH, E_ASIAN, PYGMY, SE_ASIAN2, CAUCASUS_GEDROSIA, PAPUAN, EUROPEAN, YAMNAYA, E_SIBERIAN, W_SIBERIAN Insights you can gain - Quantified ancestry fractions that help place an individual along Eurasian clines and detect non‑European, African, Oceanian, or Native American admixture. - Signals tied to major historical events: Neolithic farmer expansion (EEF), Steppe migrations (Yamnaya), Mesolithic hunter‑gatherer ancestries (SHG/WHG), and deeper Siberian/East Asian links. - Finer distinctions within Asia (E_SIBERIAN vs. W_SIBERIAN; multiple SE_ASIAN components) and between South Asian and Near Eastern affinities. Context & value - Combines modern and ancient reference profiles to illuminate both recent pedigree-level admixture and deeper population history. - Useful for triangulating hypotheses about regional ancestry, exploring migration scenarios, and augmenting genealogical results from consumer tests. Limitations - Results are model-dependent: component labels are proxies for genetic clusters, not fixed ethnic identities. Interpret proportions as population

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Chapter II

Reference Populations

The populations used as genetic references in this calculator

20 Reference Populations

NE_ASIAN: Northeast Asian populations, encompassing regions like Siberia.
N_AMERINIDIAN: North Amerindian groups, including indigenous populations of North America.
SSA: Sub-Saharan African populations, representing diverse ethnic groups below the Sahara.
EEF: Early European Farmers, relating to early agricultural societies in Europe.
SE_ASIAN1: Southeast Asian populations, including groups like the Vietnamese and Thai.
S_INDIAN: South Indian groups, predominantly Dravidian ethnicities from southern India.
SHG_WHG: Scandinavian Hunter-Gatherer and Western Hunter-Gatherer populations, ancient European foragers.
S_AMERINDIAN: South Amerindian populations, native groups from South America.
KHOISAN: Khoisan populations, indigenous peoples of southwestern Africa.
SW_ASIAN: Southwest Asian populations, including groups from the Arabian Peninsula and Iranian Plateau.
KALASH: The Kalash, a unique ethnic group residing in the Chitral region of Pakistan.
E_ASIAN: East Asian populations, including Chinese, Japanese, and Korean ethnicities.
PYGMY: Pygmy populations, indigenous groups in Central Africa.
SE_ASIAN2: Additional Southeast Asian populations, covering more of the regional diversity.
CAUCASUS_GEDROSIA: Populations from the Caucasus and Gedrosia region, covering areas like Armenia and parts of Iran.
PAPUAN: Papuan populations, indigenous peoples of Papua New Guinea and nearby islands.
EUROPEAN: European populations, broadly covering the continent's ethnic diversity.
YAMNAYA: Yamnaya, an ancient culture from the Pontic-Caspian steppe, significant in the spread of Indo-European languages.
E_SIBERIAN: East Siberian populations, indigenous groups of Eastern Siberia.
W_SIBERIAN: West Siberian populations, representing groups from the western part of Siberia.

Chapter III

Understanding Admixture Analysis

Learn how admixture calculators work and how to interpret your results

What is Admixture Analysis?

Admixture analysis is a method used to estimate your genetic ancestry by comparing your DNA to reference populations from around the world. Think of it as creating a recipe of your genetic makeup, where the ingredients are different ancestral populations.

This calculator uses 20 carefully selected modern and ancient populations as references, allowing for a detailed breakdown of your genetic heritage.

How It Works

Your DNA is compared to 20 reference populations
Modern & Ancient populations are used as genetic references
Results show your genetic similarity to these populations
More accurate with a diverse reference panel

Understanding Your Results

Your results will show percentages of genetic similarity to these reference populations. Remember these important points:

Results reflect genetic similarity, not direct ancestry
Modern & Ancient populations are used as references
Percentages indicate relative genetic contribution
Results are estimates based on available reference data