Admixture Calculator

Dodecad Globe 4

**Dodecad Globe 4 — Global modern admixture calculator** A scientifically grounded autosomal admixture tool that estimates ancestry proportions across 21 global reference populations. Designed for researchers, genealogists, and curious individuals, it reveals continental and subcontinental components (European, African, Asian, Amerindian) to illuminate migration, contact, and recent admixture—presented clearly and quantitatively.

4 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 4 Populations

Target Region World

Created November 2022

Dodecad

Calculator Creator

About This Calculator

**Dodecad Globe 4 — Modern Global Admixture Explorer** Dodecad Globe 4 is an autosomal admixture calculator optimized for modern, world-wide genetic datasets. It estimates proportional ancestry from **21 reference populations**, spanning broad continental groups and fine-grained subregions (European, Asian, African, and Indigenous American components). The calculator analyzes genome-wide SNP data to produce a compositional portrait of an individual's recent and deep ancestry. Who it's for: - Researchers and population geneticists seeking a comparative global panel - Genealogists and curious individuals exploring multi-continental roots - Anthropologists and historians interpreting migration signatures What you learn: - Quantitative ancestry proportions across 21 reference populations (e.g., Northwest European, South Asian, West African, Andean) - Biogeographic affinities and likely regional signals - Detection of minor components that reflect historical contact (trade routes, colonization, or recent admixture) Historical and genetic context: Human populations carry layered signatures of ancient migrations (Out of Africa, Eurasian expansions), regional founder events, and recent movements (colonization, slave trade, intercontinental migration). Dodecad Globe 4 frames your genome against this context, highlighting how continental and subcontinental ancestries combine in modern individuals and populations. Why it matters: - Broad, globally balanced reference set captures diversity across continents and Indigenous American subregions - Useful for hypothesis generation about population history and recent admixture - Presents results in an interpretable, quantitative format suitable for comparison across samples Important caveats: - Results are probabilistic and depend on the chosen reference panel; small component estimates are sensitive to reference composition - Interpret outputs alongside historical, genealogical, and archaeological evidence for best inference

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Chapter II

Reference Populations

The populations used as genetic references in this calculator

4 Reference Populations

European

Northwest European: Populations with ancestry from regions like the British Isles, France, and Scandinavia.
Northeast European: Includes populations from countries like Finland, Estonia, and Russia.
Central European: Populations from Germany, Poland, and neighboring areas.
South European: Includes populations from Italy, Spain, Greece, and the Balkans.

Asian

East Asian: Populations from China, Japan, Korea, and Mongolia.
Southeast Asian: Includes populations from countries like Thailand, Vietnam, and the Philippines.
South Asian: Populations from India, Pakistan, Bangladesh, and Sri Lanka.
Central Asian: Includes populations from Kazakhstan, Uzbekistan, and Turkmenistan.

African

West African: Populations from Nigeria, Ghana, Senegal, and surrounding regions.
East African: Includes populations from Kenya, Ethiopia, and Somalia.
Central African: Populations from the Democratic Republic of the Congo and neighboring areas.
Southern African: Includes populations from South Africa, Namibia, and Botswana.
North African: Populations from Egypt, Libya, and the Maghreb region.

Amerindian

Mesoamerican: Indigenous populations from Mexico and Central America.
Andean: Indigenous populations from the Andes regions of Peru, Ecuador, Bolivia, and Colombia.
Amazonian: Indigenous populations from the Amazon rainforest regions.
North American: Indigenous populations from native tribes in the present-day United States and Canada.

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

How It Works

Your DNA is compared to 4 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