Admixture Calculator

Dodecad K12a

**Dodecad K12a — Global 12-component admixture profile** A clear, modern autosomal admixture calculator that breaks your DNA into 12 ancestral components (Mediterranean, Far Asian, Siberian, North European, South Asian, West African, Caucasus, Gedrosia, East African, Southwest Asian, Southeast Asian, Northwest African). Ideal for researchers and curious users worldwide seeking a high-level, comparative snapshot of genetic ancestry and historical population affinities. Model-based and interpreta

12 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 12 Populations

Target Region World

Created March 2023

Dodecad

Calculator Creator

About This Calculator

**Dodecad K12a — Modern global admixture calculator** This calculator decomposes an individual's autosomal DNA into 12 modeled ancestral components calibrated against modern and ancient reference populations. It is designed for anyone worldwide — hobbyist genealogists, students of population genetics, and professional researchers — who wants a digestible, comparative view of genetic ancestry across broad Eurasian and African axes. What it analyzes: - Proportional ancestry signals assigned to 12 components: **Mediterranean, Far Asian, Siberian, North European, South Asian, West African, Caucasus, Gedrosia, East African, Southwest Asian, Southeast Asian, Northwest African**. - Patterns that reflect deep population structure, recent admixture, and shared drift with those reference clusters. Insights you can gain: - A high-level portrait of how much your genome aligns with major Eurasian and African population clusters. - Clues about historical migrations and contacts (e.g., Mediterranean and Caucasus links, steppe- or Siberian-related ancestries, African and South Asian connections). - Comparative context: how your profile differs from or resembles regional averages. Historical and genetic context: - These components summarize millennia of migrations — Neolithic farmers, Bronze Age steppe movements, Saharan and Bantu dispersals, Indian Ocean trade, and East/ Southeast Asian expansions — compressed into modern reference signals like **Gedrosia** (Iranian plateau/South Asian-related) or **Northwest African** (Maghrebi influence). Why it’s valuable: - Offers a clear, reproducible snapshot useful for exploratory research and personal discovery. - Complements genealogical records by revealing broad ancestral affinities that documents cannot show. Limitations: - Components are model-based approximations, not precise ethnic labels; results depend on reference choices and algorithmic assumptions. Use Dodecad K12a as a robust, interpretable guide to your global genetic h

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Chapter II

Reference Populations

The populations used as genetic references in this calculator

12 Reference Populations

Mediterranean: Populations around the Mediterranean Sea, including southern Europe, North Africa, and parts of the Middle East.
Far_Asian: Populations from the farthest eastern regions of Asia such as Japan, Korea, and eastern China.
Siberian: Indigenous peoples of Siberia, often related to Uralic and Altaic language families.
North_European: Populations from northern Europe including Scandinavia and the Baltic regions.
South_Asian: Populations from the Indian subcontinent, including India, Pakistan, Bangladesh, and Sri Lanka.
West_African: Populations from Western Africa, with a rich diversity of ethnic groups.
Caucasus: Ethnic groups from the Caucasus region situated between the Black and Caspian Seas.
Gedrosia: Populations originating from the ancient region of Gedrosia, now part of modern-day Pakistan and Iran.
East_African: Populations from East Africa, including countries like Kenya, Ethiopia, and Tanzania.
Southwest_Asian: Populations from the Middle Eastern region, including the Arabian Peninsula and parts of Iran and Iraq.
Southeast_Asian: Populations from the region east of South Asia and south of China, including Indonesia, Thailand, Vietnam, and the Philippines.
Northwest_African: Populations from the northwestern part of Africa, including the Maghreb region.

Continents:

Europe: North_European, Mediterranean
Asia: Far_Asian, South_Asian, Southwest_Asian, Southeast_Asian, Gedrosia, Caucasus
Africa: West_African, East_African, Northwest_African
Eurasia: Siberian

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

How It Works

Your DNA is compared to 12 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