How to Do a DNA Tree?

Creating a DNA tree, also known as a family tree based on DNA evidence, involves combining traditional genealogical research with DNA test results. Here's how you can build one:

1. Take a DNA Test: The first step is to take a DNA test from a reputable company like AncestryDNA, 23andMe, MyHeritage DNA, or FamilyTreeDNA. These tests analyze your autosomal DNA, which is inherited from both parents and can connect you to relatives within the past several generations.

2. Upload Your DNA Data (If Necessary): Some smaller DNA testing companies may not have the extensive databases needed for effective matching. If you tested with one of these companies, or if you want to expand your reach, consider uploading your raw DNA data to other sites like GEDmatch or MyHeritage DNA.

3. Analyze Your DNA Matches: Once your results are processed, the testing company will provide a list of DNA matches – other people who share segments of your DNA. These matches are potential relatives.

4. Contact Your Matches: Reach out to your DNA matches and exchange information. Ask about their family history, where their ancestors lived, and any other details that might help you determine your relationship.

5. Build a Traditional Family Tree: While waiting for DNA results and connecting with matches, start building a traditional family tree using genealogical records like birth certificates, marriage licenses, death records, census records, and obituaries. Websites like Ancestry.com, FamilySearch, and Findmypast can be invaluable resources.

6. Connect DNA Matches to Your Tree: The goal is to find your DNA matches within your existing family tree, or to identify how your matches are related to each other and then connect their family trees to yours. Here's how:

   • Identify Common Ancestors: Look for common ancestors between you and your DNA matches. If you can identify a shared ancestor, you've likely found the path of your relationship.
   • Utilize Shared Matches: Most DNA testing sites have a "Shared Matches" or "Matches in Common" feature, showing you who else shares DNA with both you and a specific match. This can help narrow down which side of your family the match belongs to.

7. Use DNA Testing Site Tools:

   • Some DNA testing sites also allow you to create trees directly on their site. To do so, enter key information you know about each deceased relative: name; date and place of birth; date and place of marriage and name of spouse; date and place of death. These sites often provide tools to help you visually represent your family tree and link DNA matches to specific ancestors.
   • Chromosome Browsers: More advanced users may utilize chromosome browsers, which allow you to visually compare the specific segments of DNA you share with a match. This can help pinpoint which ancestor passed down that segment.

8. Document Your Findings: Keep detailed records of your research, including sources, dates, and locations. This will help you stay organized and avoid repeating your work.

By combining DNA evidence with traditional genealogical research, you can create a more accurate and complete family tree, uncovering connections you might never have found otherwise.