Admixture Calculator

Dodecad K7b

**Dodecad K7b — Global 7-component admixture** A concise, modern admixture calculator that breaks a genome into seven broad ancestral components using worldwide reference populations (South Asian, West Asian, Siberian, African, Southern, Atlantic_Baltic, East Asian, Asian, African, European). Ideal for genealogists, students, and researchers seeking a rapid, interpretable global ancestry snapshot and a starting point for deeper analyses.

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 K7b — Modern global admixture calculator** The Dodecad K7b calculator decomposes a DNA sample into seven broad ancestral components using a curated set of modern reference populations from across the world. It provides a clear, interpretable overview of major continental and subcontinental ancestry in a contemporary framework, suitable for global comparisons and initial hypothesis generation. **What this calculator analyzes** - Genome-wide SNP genotype data summarized into seven ancestry components using model-based clustering (ADMIXTURE-style inference). - Affinities to the provided reference groups: South Asian, West Asian, Siberian, African, Southern, Atlantic_Baltic, East Asian, Asian, African, European. - Relative signals of recent admixture versus deeper shared ancestry across global populations. **Who it's designed for** - Genealogists and ancestry enthusiasts wanting a straightforward global ancestry snapshot. - Students and researchers exploring broad-scale population structure and comparative patterns. - Anyone curious how their genome aligns with major modern population clusters. **Insights you can gain** - Percentage breakdown across broad ancestral clusters that reflect major geographic ancestries. - Which reference groups your genome most closely resembles and where mixture signals are strongest. - A baseline for interpreting migration history and contact events suggested by your admixture profile. **Historical and genetic context** Human genetic variation is shaped by millennia of migration, isolation, and admixture. K7b captures broad components that often correlate with large geographic and historical groups (e.g., South Asian, West Asian, East Asian, African, European). These components are statistical constructs: informative for comparison but not precise proxies for cultural or ethnic identity. Note that similar labels (e.g., two "African" entries) can reflect distinct reference clusters or sampling sets. **Why this calculator is

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Chapter II

Reference Populations

The populations used as genetic references in this calculator

7 Reference Populations

South Asian
- Populations from the Indian subcontinent, including ethnic groups from India, Pakistan, Bangladesh, and Sri Lanka.
West Asian
- Populations from the Middle East, including ethnic groups from regions such as Anatolia, Iran, and the Arabian Peninsula.
Siberian
- Indigenous populations from Siberia, spanning northern Russia, including groups like the Evenki and Chukchi.
African
- Diverse ethnic groups from the African continent, with a wide range of genetic diversity, including Sub-Saharan and Saharan peoples.
Southern
- [Please provide additional context for this category, as it is ambiguous without further information.]
Atlantic_Baltic
- Populations from around the Baltic Sea and Atlantic regions of Europe, including ethnic groups from Scandinavia, the Baltic States, and parts of Northern Europe.
East Asian
- Populations from East Asia, including ethnic groups from China, Japan, Korea, and parts of Southeast Asia.

Grouped by Continent

Asian
- South Asian
- West Asian
- Siberian
- East Asian
African
- African
European
- Atlantic_Baltic

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