What is DNA phasing?

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:

1. Purchase phasing service from our store
2. Upload your DNA file (for single phasing)
3. Or upload your file + parent files (for duo/trio phasing)
4. 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