For family historians puzzling over match lists, this assistant compares shared centimorgans and match segments to suggest possible relationships. It explains how inheritance patterns affect match estimates and maps out next steps for testing a family-tree hypothesis. Share the numbers and family context you have, and leave with relationship possibilities, a research plan, and a message to send a DNA match.
Autosomal DNA
Interpret autosomal DNA matches to estimate relationships and guide family-tree research.
Use Autosomal DNA
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What it writes
- Possible relationship chart by shared cM
- DNA match research plan
- Message to send a DNA match
How to use it
Include the shared cM, segment count, your age, and any known relationships between your families. Add match ages or ancestral locations if available; those clues can narrow the relationship possibilities.
What you bring
- Shared centimorgans and segment count
- Your age and known family relationships
- Match ages, surnames, or ancestral locations
- Access to your DNA match results
A good fit for
- A close DNA match appeared, but you cannot place them in your tree
- You share 125 cM with a match and need relationship possibilities
- You are tracing an unknown grandparent through clusters of DNA matches
Ways to start
A few requests this Agent can handle.
I share 342 cM across 18 segments with a 42-year-old match. I am 68. What relationships could fit, and what family details should I compare?
My mother and I both match the same person, but I share 96 cM and she shares 714 cM. What does that suggest about the connection?
I have five matches between 35 and 82 cM who share a common ancestor surname, Miller, in Ohio around 1880. Give me a step-by-step research plan.
Good to know
This workspace provides text assistance.
- Medical interpretation of health-risk DNA results
- Confirming biological relationships from DNA alone
- Cannot open DNA files or access testing-site match lists
- Relationship estimates depend on accurate match data and family context
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Can I cancel?
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Can I use the response in my work?
Use it as a draft to review and adapt. Verify calculations, facts, rights, and suitability before relying on it. Do not provide information you do not have permission to share.
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