Admixture Calculator

Dodecad K12b

**Dodecad K12b — Modern 12-way admixture calculator** A concise, global ancestry tool that estimates proportions from twelve reference populations: **Gedrosia, Siberian, Northwest African, Southeast Asian, Atlantic Med, North European, South Asian, East African, Southwest Asian, East Asian, Caucasus,** and **Sub-Saharan**. Ideal for curious users and researchers seeking a balanced, interpretable view of regional genetic contributions. Statistical estimates best used alongside historical and gen

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 November 2022

Dodecad

Calculator Creator

About This Calculator

**Dodecad K12b — Modern 12-way Admixture Calculator** Dodecad K12b is a modern, global admixture calculator that decomposes an individual's genome into twelve ancestral components derived from broad reference populations. It analyzes allele frequency patterns across the genome to estimate proportional ancestry from: **Gedrosia, Siberian, Northwest African, Southeast Asian, Atlantic Mediterranean, North European, South Asian, East African, Southwest Asian, East Asian, Caucasus,** and **Sub-Saharan** groups. Who it's for - Genetic enthusiasts, genealogists, and curious individuals seeking a clear, comparative view of their deep ancestry - Researchers and students who need a convenient, standardized 12-component breakdown for population comparisons What you gain - A breakdown of ancestry proportions that highlights major continental and regional contributions - Contextual interpretation: which components typically reflect West Eurasian, African, South Asian, and East Asian heritage - A starting point for historical inference—migration signals, admixture events, and regional affinities—when combined with archaeological and linguistic evidence Genetic and historical context K12b is an allele-frequency based model optimized for modern populations: it captures long-term regional differentiation rather than single recent genealogical events. Components like **Gedrosia** and **Caucasus** reflect shared West Asian ancestries, while **Atlantic Med** and **North European** resolve diverse European contributions. Asian and African diversity are represented through **East Asian, Southeast Asian, Siberian, East African,** and **Sub-Saharan** components. Why use Dodecad K12b - Balanced resolution: twelve components provide interpretable regional signals without overfitting - Global scope: designed for worldwide application, useful for multi-ethnic samples - Comparative utility: easy to compare individuals, populations, and published datasets Limitations This is a statist

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Chapter II

Reference Populations

The populations used as genetic references in this calculator

12 Reference Populations

Gedrosia: Ancient region covering parts of modern-day Iran and Pakistan, known for historical trade routes and diverse ethnic groups.
Siberian: Populations native to Siberia, characterized by adaptation to cold climates and diverse indigenous cultures.
Northwest African: Encompasses populations from the Maghreb region, with Berber, Arab, and Tuareg peoples.
Southeast Asian: Diverse populations from Thailand, Vietnam, Malaysia, and surrounding areas, with rich cultural and linguistic diversity.
Atlantic Med: Populations around the Mediterranean, blending influences from Europe, North Africa, and the Middle East.
North European: Covers Scandinavia, the British Isles, and parts of Central Europe, known for Germanic and Celtic heritages.
South Asian: People from India, Pakistan, Bangladesh, and surrounding countries, with a wide array of languages and cultures.
East African: Populations from countries like Kenya, Tanzania, and Ethiopia, marked by ethnic diversity and historical significance as the cradle of humankind.
Southwest Asian: Includes people from the Arabian Peninsula and nearby regions, rich in historical trade and cultural exchange.
East Asian: Encompasses China, Japan, Korea, and Mongolia, known for ancient civilizations and technological advancements.
Caucasus: Diverse ethnolinguistic groups from the Caucasus region between Europe and Asia, including Georgia, Armenia, and Azerbaijan.
Sub-Saharan: Represents the diverse populations of Africa south of the Sahara Desert, excluding North Africa.

Continent Grouping

Africa:
- Northwest African
- East African
- Sub-Saharan
Asia:
- Gedrosia
- Siberian
- Southeast Asian
- South Asian
- Southwest Asian
- East Asian
- Caucasus
Europe:
- Atlantic Med
- North European

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