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DNA Coverage Analysis

Understanding your data quality

Analyzing your DNA coverage...

Analyzing DNA coverage regions

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Chapter 1

Where Certainty Fades

What low coverage regions reveal about your ancestry

Low coverage regions are areas of your genome where standard sequencing provides fewer data points. These regions—including centromeres and structurally complex areas—often preserve ancient ancestry signals that may be diluted or absent in high-coverage regions.

Not every region of your genome yields its secrets easily. Some segments have fewer data points for analysis—not because something is wrong, but because this is how inheritance works at the deepest levels.

Think of it like an ancient map, where the known world ends and the notation simply reads: "Here, we are still learning." The story is real. The ancestry is real. We are simply honest about what can be seen clearly and what remains at the edges of current knowledge.

"What remains unclear may be the oldest inheritance of all—preserved precisely because it changes so slowly."

This analysis complements standard ancestry reports by examining genomic regions that preserve deeper historical patterns.

Chapter 2

Your Ancestral Proportions

Click any region to explore its details

These percentages represent ancestry signals preserved in the oldest, most stable regions of your genome. They reveal connections that may have been diluted elsewhere through generations of recombination.

Northwestern-European
51.2%
East-African
33.2%
NorthWest-Asian
10.8%
South-European
3.0%
WestCentral-Asian
1.8%
Chapter 3

Geographic Origins

Visualizing your ancestry across the globe

This map illustrates where your ancestry components are found today. The patterns reveal ancient migrations and population movements that shaped the genetic landscape of humanity.

Map areas represent relative contribution of each ancestry component and do not correspond to precise geographic boundaries. Colors indicate ancestral origins as detected in low coverage regions.

Chapter 4

Preserved Regions

The specific genomic segments examined in your DNA

These are the genomic coordinates where we found preserved ancestry signals. Each segment represents a window into your deep genetic past—regions that have resisted change across countless generations.

Reference Regions Analysed
Chromosome Segment Overview
Chromosome Start Position End Position
Chr Chr1 118,434,520 153,401,108
Chr Chr2 85,304,243 99,558,013
Chr Chr2 132,695,025 141,442,636
Chr Chr2 192,352,906 198,110,229
Chr Chr8 10,428,647 13,469,693
Chr Chr9 38,293,483 72,605,261
Chr Chr10 44,555,093 53,240,188
Chr Chr15 20,060,673 25,145,260
Chr Chr15 27,115,823 30,295,750
Chr Chr16 19,393,906 24,031,556
Chr Chr17 59,518,083 64,970,531
Chr Chr17 77,186,666 78,417,478
Chr Chr21 16,344,186 19,375,168
Chr Chr22 16,051,881 25,095,451
Chapter 5

The Nature of Deep Time

Understanding how we analyze low coverage regions

Understanding why some regions have limited data helps you appreciate what your results truly represent. There are three natural reasons, each connected to how genetic inheritance works across millennia.

Centromeric Analysis

Centromeres are structurally complex regions that standard sequencing often skips. By analyzing these areas, we uncover ancestry signals preserved from earlier generations.

Ancient-Biased Signals

Low coverage regions tend to preserve older genetic material that may be diluted in high-recombination areas. This reveals deeper ancestral connections.

Complementary Analysis

This report works alongside standard ancestry analysis, providing a more complete picture by examining regions that typical tests may overlook.

How We Analyze Your Data

1

Identify low coverage and centromeric regions in your DNA data

2

Compare patterns against specialized reference panels

3

Calculate ancestry proportions from preserved signals

4

Provide context with population and historical data

"These are not limitations of your ancestry—they are characteristics of how deep time is recorded in the genome."

Chapter 6

AI-Powered Analysis

Get personalized insights about your results

AI ASSISTANT by DNAGENICS

Enabled until 2027-03-03

This AI analysis is limited to your low coverage regions ancestry percentages. No additional data or personal information is included in this analysis.

Try these questions:

Frequently Asked Questions

Low coverage regions are areas of the genome where standard DNA sequencing provides fewer data points. This includes centromeric regions and areas with complex repetitive structures. Despite having less data, these regions often preserve ancient ancestry signals that can reveal deeper genetic heritage.

Standard ancestry tests often skip or give less weight to low coverage regions. However, these areas can preserve genetic signals from earlier generations that have been diluted elsewhere. By analyzing them specifically, we can uncover ancestry connections that standard tests might miss.

While low coverage regions have fewer data points, our analysis uses specialized methods designed for these areas. The results should be considered complementary to standard ancestry tests. They reveal patterns that may not appear in conventional analysis, adding depth to your overall ancestry picture.

Yes, results may differ because low coverage regions preserve different ancestry signals than high-coverage areas. This is expected and valuable. These differences often reveal ancient ancestry components that have been diluted through recombination in other parts of your genome.

We accept raw DNA files from 23andMe, AncestryDNA, MyHeritage, FamilyTreeDNA, Living DNA, and most other standard testing companies. Whole genome sequencing (WGS) files also work and may provide additional detail in low coverage analysis.

Our Low Coverage Regions report specifically focuses on analyzing areas that standard tests often skip or gloss over. By examining these challenging genomic regions—particularly around centromeres—we can sometimes uncover ancient ancestry signals that remain preserved in these structurally complex areas.

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