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.
Calculator Details
Comprehensive information about this admixture calculator
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
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
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