Tolan K25 R1

By TOLAN

Admixture Calculator

Calculator Details

Name

Tolan K25 R1

Target Population

World

Author

TOLAN

Era

Modern

Number of Components

Description

Tolan K25 R1 is a modern, high-resolution genetic admixture calculator that decomposes an individual's genome into 25 geographically and historically informed reference components. Designed for a global audience—researchers, genealogists, adoptees, and curious individuals worldwide—it quantifies contributions from major regional clusters such as Atlantic and Northwest European groups, steppe and Black Sea-associated sources, multiple Caucasus and Anatolian components, North and Sub-Saharan African groups, Siberian and East Asian signatures, South and Southeast Asian sources, Central Asian and Amerindian signals, and others. The output reports proportional estimates and ranked component contributions, highlighting likely dominant ancestries and subtle minority inputs. This calculator is built to illuminate both recent genealogical ancestry and deeper population history. Users can detect signals consistent with known historical movements (for example, Neolithic farmer expansions, Bronze Age steppe dispersals, trans-Saharan and Indian Ocean exchanges, Siberian and East Asian gene flow, or more recent colonial-era admixture), while also observing geographic clines and admixture blends common across border regions. Tolan K25 R1 offers explanatory notes and interpretation guidance so results are accessible to non-specialists and informative to experts. Why this matters: a 25-component model balances resolution and interpretability—enough detail to distinguish neighboring regions and ancestral layers, without overwhelming noise from overly granular panels. The calculator is a valuable tool for exploring personal origins, contextualizing genetic matches, generating hypotheses for academic study, and bringing a clearer, evidence-based narrative to family history. Limitations are clearly stated: results depend on the reference panel, represent probabilistic estimates rather than definitive proofs, and should be used alongside genealogical records and other genetic analyses

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Reference Populations

Reference Panels

A-Atlantic
Populations from the regions around the Atlantic Ocean, including parts of Western Europe and nearby islands.
B-Scandinavia
Populations from Norway, Sweden, Denmark, and Finland.
C-NW-Europe
Populations from the Northwestern part of Europe, typically including the UK, Ireland, and Northern France.
D-South-Alps
Populations located around the Southern Alps, influencing Northern Italy and surrounding areas.
E-West-Med
Populations from Western Mediterranean regions, including parts of Spain, Southern France, and Italy.
F-Baltic
Populations from countries around the Baltic Sea such as Estonia, Latvia, and Lithuania.
G-Russian-Steppes
Populations from the steppes region of Southern Russia.
H-West_Black-Sea
Populations near the western part of the Black Sea, including regions in Bulgaria and Romania.
I-South-East-Europe
Populations from the Balkans and southeastern parts of Europe.
J-South-Med
Populations from Southern Mediterranean regions including parts of Northern Africa and Southern Europe.
K-East-Caspian
Populations located east of the Caspian Sea.
L-South-Caspien
Populations from southern regions near the Caspian Sea.
M-Arabia
Populations from the Arabian Peninsula.
N-South-Caucasus
Populations from the region south of the Caucasus Mountains, including parts of Georgia, Armenia, and Azerbaijan.
O-North-Anatolia
Populations from northern parts of Anatolia in present-day Turkey.
P-Sahara
Populations from the vast desert region of Northern Africa.
Q-Equatorial_Africa
Populations from the equatorial regions of Africa.
R-East-Africa
Populations from the eastern regions of Africa, including Kenya, Ethiopia, and Tanzania.
S-Siberian
Populations from Siberia, the vast region in northern Asia, part of Russia.
T-East-Asian
Populations from eastern parts of Asia, including China, Japan, and Korea.
U-South-Asia
Populations from the Indian subcontinent, including India, Pakistan, Bangladesh, and Nepal.
V-SE-Asia
Populations from Southeast Asia, including countries like Thailand, Vietnam, and the Philippines.
W-Central-Asia
Populations from Central Asian countries, such as Kazakhstan, Uzbekistan, and Turkmenistan.
X-Amerindian
Indigenous populations from the Americas.
Y-North-Russian
Populations from northern regions of Russia.

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

How It Works

Key Points

Your DNA is compared to 25 reference populations
Modern populations are used as references
Results show your genetic similarity to these populations

Understanding Your Results

Your results will show percentages of genetic similarity to these reference populations. Remember:

Results reflect genetic similarity, not direct ancestry
Modern populations are used as references
Percentages indicate relative genetic contribution from each population
Results are estimates based on available reference data