Chromosome Breakdown

Uncover and celebrate your European heritage

Reveal European ancestry in greater detail — beyond standard ethnicity estimates.

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17 European regional breakdowns — more detail than ever

Explore your ancestry across 17 distinct European regions, offering deeper resolution than broad “European” labels and helping you better understand where your roots truly lie.

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  • lberian
  • British
  • French
  • German
  • Irish
  • Southern Italy
  • Central European Jewish
  • South Slavic
  • South Balkan
  • Northern Europe
  • Eastern Europe
  • Basque
  • Scandinavian
  • Hispanic Jews
  • Mediterranean Islander
  • Tirolean Alpine
  • Roma

Chromosome breakdown — deep analysis you won’t find elsewhere

Our proprietary 22-chromosome analysis reveals ancestry signals that standard tests often miss, providing a clearer picture of how your ancestry was inherited.

Each of your chromosomes carries a unique part of your ancestry story.

As DNA is passed down through generations, chromosomes are reshuffled through a random process called recombination. Over time, this creates meaningful differences in which ancestral segments are inherited — even between siblings.

That’s why examining DNA at the chromosome level is essential for detecting ancestry that can be diluted or missed in broader analyses.

A more sensitive way to detect European ancestry

This report analyzes all 22 chromosomes individually, allowing it to detect subtle European ancestry signals that can be averaged out or overlooked in traditional ancestry tests.

Understand your European ancestry

See your ancestry from a broad European view to precise regional detail, with deeper insight into how each part was inherited.

Learn more about the regions behind your DNA

Explore expert-researched historical and cultural context for each European region, helping connect your genetic results to real populations, migrations, and histories.
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Designed with population genetics experts

Carlos D. Bustamante

Dr. Carlos D. Bustamante is an internationally recognized leader in the application of data science and genomics technology to problems in medicine, agriculture, and biology. He was named a MacArthur Fellow in 2010, and currently Professor of Biomedical Data Science, Genetics at Stanford University.

Alexander Ioanidis

Dr. Alexander Ioannidis (PhD, MPhil) is a research fellow in the Stanford School of Medicine (Department of Biomedical Data Science), his work focuses on applying computational methods to problems in genomics and population genetics.

Razib Khan

Razib Khan has degrees in biology and biochemistry from the University of Oregon. He studied genetics at the graduate level at UC Davis. He helped develop ancestry algorithms for Family Tree DNA and National Geographic. He has worked in the personal genomics industry for 8 years.

The authors present a new simple, accurate, and easily trained methods for identifying and annotating ancestry along the genome (local ancestry). This method (XGMix) based on gradient boosted trees, which, while being accurate, is also simple to use, and fast to train, taking minutes on consumer-level laptops.

Scientific paper PDF

"The European Breakdown gave me more detail than any other ancestry test."

By examining all 22 chromosomes individually, the European Breakdown uncovers subtle regional European ancestry and maps it to 17 distinct European regions, supported by population genetics research.

Uncover and celebrate your European heritage

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