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DNA PHASING SERVICE

Separate Your DNA Into Maternal & Paternal Lines

Discover which traits and ancestries you inherited from each parent. Our phasing service creates two separate files?one for each parental contribution?enabling deeper genealogical insights and clearer family connections.

? 28.00

Starting price Includes Starter Pack

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Separate maternal/paternal

Up to 99% accuracy (with parents)

~48h turnaround

Phasing Visualization

Your DNA

Mixed maternal + paternal

Parent 1

Maternal Line

Parent 2

Paternal Line

Overview

What is DNA Phasing?

Understanding Phasing

You inherit 50% of your DNA from each parent. Through phasing, we create two separate RAW files, each representing the genetic contribution from one parent. This allows you to determine which traits or ancestries you inherited from your maternal or paternal side.

DNA phasing is particularly valuable for ancestry and genetic genealogy because it allows you to determine the specific ancestry and DNA matches that you inherited from each parent. This separation provides clearer insights into your family history.

Important Note

In Duo or Trio phasing, the phased files contain only the shared SNPs between the child's file and the parents' files. SNPs that are not shared cannot be phased. We strongly recommend using the same testing company for the child and the parents for best results.

Options

Phasing Options

Choose the method that works best for your situation

Statistical

~90% Accuracy

Phasing Without Parents

Uses population-level haplotype patterns to statistically separate your chromosomes into maternal and paternal contributions.

Separate maternal/paternal DNA
No parental samples needed
Some ancestry noise expected

Duo

~98% Accuracy

Child + One Parent

With one parent's DNA, we can definitively assign which chromosomes came from that parent and which from the other.

Precise parent identification
99% separated ancestry
Parent 1 = provided parent

Trio

~99% Accuracy

Child + Both Parents

With both parents' DNA, achieve the highest possible accuracy for complete parental separation.

Complete parental separation
Near-complete ancestry accuracy
Highest precision possible

Process

How It Works

Simple three-step process to separate your parental DNA

Phasing Workflow

Share Your Files

Upload RAW files

Child + parents

Specify Options

Choose phasing type

Statistical/Duo/Trio

Receive Results

Two phased files

~48 hours

The Science

What Happens Inside the Pipeline

The statistical phasing pipeline runs on research-grade bioinformatics infrastructure. Here's what actually runs when you submit a file.

Statistical Phasing Workflow

Input File

Your raw DNA data

Any major provider

Pre-processing

VCF conversion & filters

Remove Y/MT, fix ploidy

Beagle Phasing

1KG Phase 3 reference

Chr 1-22 + X

Haplotype Split

VCF → parental RAW files

One file per haplotype

Merge with Original

Homozygous SNPs added back

RawDnaMerger

Output Files

Parent 1 + Parent 2

Two RAW ZIP files

Technical Deep Dive For Researchers

Pre-processing

The raw file is converted to VCF against the GRCh37 reference. Three normalisation filters run before Beagle sees any data.

Y and MT chromosomes removed
Haploid calls normalised to diploid
Isolated edge markers trimmed

Phasing Engine

Beagle 5.4 runs in phasing-only mode (impute=false) per chromosome against the 1000 Genomes Phase 3 reference panel.

1KG Phase 3 bref3 reference
GRCh37 genetic maps
Chr 1-22 + X phased

Post-phasing Merge

Each phased VCF is split into two parental haplotype RAW files. Homozygous SNPs from the original file are added back; remaining heterozygous calls are set to no-call.

Per-haplotype RAW conversion
Homozygous SNPs re-merged
Unresolvable hets → no-call

Reference Panel

The reference panel provides the haplotype templates used to statistically infer parental contributions.

1000 Genomes Phase 3
2,504 individuals, 26 populations
GRCh37 / hg19


                                # Statistical phasing workflow

                                Input: raw_genotypes.txt

                                Step 1: Convert to VCF; remove Y/MT; normalise ploidy; trim edge markers

                                Step 2: Phase with Beagle 5.4 (impute=false) against 1000G (chr 1-22 + X)

                                Step 3: Split phased VCFs into Parent1 and Parent2 haplotype RAW files

                                Step 4: Merge parental files with homozygous SNPs from original sample

                                Step 5: Set remaining heterozygous genotypes to no-call

                                Output: Parent1.zip + Parent2.zip

Compatibility

Supported DNA Test Providers

AncestryDNA 23andMe MyHeritage FamilyTreeDNA LivingDNA WeGene Nebula Genomics Dante Labs 24Genetics

Deliverables

What You'll Receive

Service Includes

Two phased RAW files (Parent 1, Parent 2)
Starter Pack for each phased file
Processing within 48 hours
Comprehensive parental ancestry insights

Usage Scenarios

DNAGENICS Analysis ? separate reports per parent
Ancestry Research ? distinct maternal/paternal breakdown
Genealogy ? clearer DNA match assignments
Third-party platforms ? GEDmatch, MyTrueAncestry

Pricing

Service Options

Choose your phasing method

Phasing Without Parents

?28.00

One-time payment

30% off with code: EASTER30

Statistical phasing (~90% accuracy)
Two separate parental files
Starter Pack included
Fast processing (~48h)
Secure handling
Technical support

Order Now

Most Accurate

Phasing With Parents

?28.00

One-time payment

30% off with code: EASTER30

Duo/Trio phasing (up to 99%)
Two separate parental files
Starter Pack included
Fast processing (~48h)
Secure handling
Technical support

Order Now

FAQ

Frequently Asked Questions

Why do I need to test my parents when I can phase my own DNA?

Each phased file only contains 50% of each parent's DNA?the portion you inherited. To get their full genetic information, you still need to test your parents directly. Phasing reveals which half you got from each, but not the half you didn't inherit.

What determines Parent 1 vs Parent 2?

In Duo Phasing, Parent 1 refers to the parent whose RAW file you provided. In Trio Phasing, Parent 1 is the first file you select during ordering, and Parent 2 is the second. When phasing without parents, we can't determine which side belongs to each parent?labels are arbitrary.

What about shared SNPs?

The phased files will only include SNPs that are shared between the child's and parents' files. Any SNPs not present in both files cannot be phased and won't be included. This is why we recommend using the same testing company for all family members.

Can I rephase a previously phased file?

Once a phased file (either Parent 1 or Parent 2) has been created, it cannot be rephased. Phased files represent a single haplotype and cannot be separated further. You would need to use your original, unphased RAW file for any new phasing requests.

Important

Things to Know

Technical Details

Phasing covers chromosomes 1-22 and X
Process takes up to 48 hours
Best results when all tests are from the same company
For ancestry and genealogy purposes only
Once phased, files cannot be rephased

Legal

Legal Information

Intended Use

This service is intended solely for ancestry and genealogy research purposes. It is not designed, intended, or suitable for health-related uses or medical purposes.

Key Terms

Statistical Nature: Phasing accuracy varies from 90-99% depending on method. Statistical phasing may have some noise in ancestry results.
No Health Claims: We explicitly disclaim responsibility for health predictions or interpretations made from phased data.
Third-Party Compatibility: Compatibility with external platforms is provided as-is and not guaranteed.
Data Privacy: Your files are processed securely and available via private download link.

Start Your DNA Phasing Today

Discover your parental genetic heritage with separated maternal and paternal files

Begin Now Compare Options

Separate Your DNA Into Maternal & Paternal Lines

What is DNA Phasing?

Understanding Phasing

Important Note

Phasing Options

Phasing Without Parents

Child + One Parent

Child + Both Parents

How It Works

What Happens Inside the Pipeline

Pre-processing

Phasing Engine

Post-phasing Merge

Reference Panel

Supported DNA Test Providers

What You'll Receive

Service Includes

Usage Scenarios

Service Options

Phasing Without Parents

Phasing With Parents

Frequently Asked Questions

Things to Know

Technical Details

Legal Information

Intended Use

Key Terms

Start Your DNA Phasing Today

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