Admixture Calculator

Dodecad Weac

**Dodecad Weac — Four‑way global admixture in one view** A modern, easy‑to‑use autosomal admixture calculator that partitions genomes into **Atlantic–Baltic**, **Near‑East**, **Far‑East**, and **Africa** components. Designed for users worldwide, it delivers a clear, high‑level ancestry profile useful for genealogy, teaching, and initial population‑genetic exploration. Fast, interpretable, and a great starting point for deeper analyses.

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 Weac — Modern four-way admixture calculator** Dodecad Weac is a compact, intuitive autosomal admixture calculator that models an individual's ancestry as proportions of four broad reference populations: **Atlantic–Baltic**, **Near‑East**, **Far‑East**, and **Africa**. Designed for modern samples from anywhere in the world, it summarizes genome-wide SNP variation into a clear, interpretable four‑component profile. What this calculator analyzes - Genome‑wide autosomal markers to estimate the proportion of ancestry traceable to each of the four reference axes. - Population‑level allele frequency contrasts to resolve broad continental and subcontinental signals. Who it's designed for - Enthusiastic genealogists and family historians seeking big‑picture ancestry breakdowns. - Researchers and students who want a simple, reproducible four‑way model for exploratory analyses. - Curious individuals worldwide who want a concise summary of major continental contributions to their genome. Insights you can gain - Relative contributions from Atlantic–Baltic, Near‑Eastern, Far‑Eastern, and African source clusters. - Broad historical signals such as Eurasian clines, signals of transcontinental admixture, and major migration legacies (e.g., movements across Eurasia, Near‑Eastern expansions, and African gene flow). - A starting point for deeper analysis: results can guide targeted follow‑up with higher‑resolution regional panels or haplotype‑based methods. Context and limitations - The four‑component model is deliberately simple: it emphasizes clarity over fine regional detail. It captures major ancestry streams shaped by events like Out‑of‑Africa dispersals, Holocene farmer and pastoralist movements, and later regional contacts. - Interpret results as approximations tied to the chosen reference sets; they are best combined with historical, archaeological, and regional genetic evidence. Why this calculator is valuable - Fast, accessible, and easy to interpret—idea

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Chapter II

Reference Populations

The populations used as genetic references in this calculator

4 Reference Populations

Atlantic-Baltic

Description: This region encompasses parts of Northern and Western Europe, including the British Isles, Scandinavia, and the areas around the Baltic Sea. The populations in this region are historically interconnected through maritime trade, shared cultural ties, and the exchange of genetic material over several millennia.

Near-East

Description: Often considered the cradle of civilization, this region includes parts of the Eastern Mediterranean and extends into Western Asia. It has diverse populations with rich histories of ancient empires and significant contributions to early human civilization.

Far-East

Description: This area refers to Eastern Asia, including countries like China, Japan, and Korea. Populations in this region have ancient roots, with distinct cultural, linguistic, and genetic lineages that have evolved over thousands of years.

Africa

Description: The continent is characterized by a tremendous diversity of cultures and languages, with populations that date back to the origins of anatomically modern humans. Africa is divided into numerous ethnic groups, each with unique histories and genetic backgrounds.

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