DNA phasing is a process that determines which genetic variants you inherited from your mother versus your father:
Understanding Phasing:
Humans have two copies of each chromosome - one from each parent. Standard DNA files show you have specific variants, but don't indicate which parent contributed which allele. Phasing solves this problem.
Example:
- Unphased data: "You have A and G at position rs1234567"
- Phased data: "You inherited A from your mother and G from your father"
Why Phasing Matters:
- Genealogy: Trace specific DNA segments to maternal/paternal ancestors
- Ancestry: More accurate ethnic composition analysis
- Matching: Better DNA relative matching
- Health: Understand inherited conditions from specific parents
- Research: Essential for advanced genetic studies
Types of Phasing:
1. Statistical (Single) Phasing:
- Uses algorithms and reference populations
- Works with just your DNA file
- 85-95% accurate
- Good for general ancestry analysis
2. Duo/Trio Phasing:
- Uses parent(s) DNA files along with yours
- Direct comparison determines inheritance
- 99%+ accurate
- Best for detailed genealogy work
- Requires DNA files from one or both parents
How to Phase Your DNA:
- Purchase phasing service from our store
- Upload your DNA file (for single phasing)
- Or upload your file + parent files (for duo/trio phasing)
- Receive phased file in 24-48 hours
Phased File Uses:
- Upload to genealogy sites for better matching
- Use in advanced ancestry calculators
- Research and academic studies
- Preserve phased data for family members