Admixture Calculator

Dodecad Eurasia 7

**Dodecad Eurasia 7** provides a clear seven-way decomposition of autosomal ancestry for modern-era samples. Comparing your genotype to seven reference populations (Sub_Saharan, West_Asian, Atlantic_Baltic, East_Asian, Southern, South_Asian, Siberian), it returns percentage estimates of major Eurasian and adjacent ancestries—ideal for genetic genealogists, researchers, and curious users seeking a high-level, interpretable admixture snapshot.

7 Components

World Target Region

Dodecad Author

Modern Era

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Chapter I

Calculator Details

Comprehensive information about this admixture calculator

Author Dodecad

Era Modern

Components 7 Populations

Target Region World

Created November 2022

Dodecad

Calculator Creator

About This Calculator

**Dodecad Eurasia 7 — Modern-era admixture calculator** This calculator estimates an individual's autosomal ancestry proportions using a seven-component model designed to capture broad continental and regional variation across Eurasia and surrounding regions. It compares a tested genotype to seven reference populations: **Sub_Saharan, West_Asian, Atlantic_Baltic, East_Asian, Southern, South_Asian,** and **Siberian**, returning interpretable percentage contributions that reflect recent and deep shared ancestry. Who it's for - Genetic genealogists seeking clearer regional breakdowns beyond continental labels - Population geneticists and students exploring contemporary Eurasian admixture patterns - Curious users worldwide who want a high-level snapshot of ancestral components What you gain - A concise, seven-way decomposition of autosomal ancestry expressed as percentages - A sense of major genetic influences (e.g., West Asian vs. Atlantic-Baltic) relevant to Eurasian histories - Comparative context for interpreting heritage in light of migration, admixture, and population structure Historical and genetic context This model is rooted in modern population-genetics practice: reducing complex variation into major axes that reflect historical migrations and long-term isolation. Components like **Atlantic_Baltic** and **West_Asian** capture northwest and southwest Eurasian affinities respectively, while **East_Asian**, **South_Asian**, and **Siberian** reflect distinct eastern and central Asian ancestries. **Sub_Saharan** and **Southern** provide crucial contrast for African and Near/Mediterranean signals. The result is not a postcode of ancestry but a statistical portrait of genetic affinities shaped by millennia of movement. Why use it - Fast, intuitive overview of where genetic signal clusters across Eurasia - Useful starting point for deeper analysis with finer-scale tools or historical records - Designed for global samples; robust to a wide range of background

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Chapter II

Reference Populations

The populations used as genetic references in this calculator

7 Reference Populations

Sub_Saharan
- Populations: Ethnic groups primarily located in Africa south of the Sahara Desert, including Bantu-speaking peoples, Nilotic, and other indigenous groups.
West_Asian
- Populations: Diverse groups in Western Asia, including Arabs, Persians, Turks, and other ethnicities in regions like the Middle East and parts of the Caucasus.
Atlantic_Baltic
- Populations: Groups in northern Europe, including those from the Atlantic coastal regions and the Baltic states, such as Scandinavians, Finnic peoples, and other Eastern European ethnic groups.
East_Asian
- Populations: Ethnic groups in East Asia, including Chinese, Japanese, Koreans, and Mongolic peoples.
Southern
- Populations: Refers to populations in Southern Europe, including Mediterranean countries like Italy, Greece, and the Iberian Peninsula, often overlapping with parts of the Balkans.
South_Asian
- Populations: Ethnic groups in the Indian subcontinent, including Indo-Aryans, Dravidians, and other ethnic minorities of India, Pakistan, Bangladesh, and Sri Lanka.
Siberian
- Populations: Indigenous peoples of Siberia, such as the Nenets, Evenki, and other smaller groups with a presence in vast, sparsely populated areas of Russia.

Grouped by Continent:

Africa
- Sub_Saharan
Asia
- West_Asian
- East_Asian
- South_Asian
- Siberian
Europe
- Atlantic_Baltic
- Southern

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 7 carefully selected modern populations as references, allowing for a detailed breakdown of your genetic heritage.

How It Works

Your DNA is compared to 7 reference populations
Modern 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 populations are used as references
Percentages indicate relative genetic contribution
Results are estimates based on available reference data