Uploaded April 2026 | Updated September 2026, 13 hours ago
If you’ve ever looked at your DNA segment data and thought something didn’t add up… you’re not alone. In this video, Andy answers a viewer's question about visual phasing and explains a key rule that many genealogists miss:
👉 You can’t go directly from a full match to a no-match.
Using real segment data, he walks through:
- The difference between half-identical and fully identical segments
- Why full matches are always surrounded by half matches
- How this rule helps you spot errors and interpret your results correctly
This question came from someone working with multiple siblings and an endogamous population, which makes understanding these patterns even more important.
👉 Watch the full Q&A session here: youtube.com/live/1r-lv0ZlWqI?feature=share
Have a DNA question you’d like answered in a future video? Drop it in the comments!
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CONTINUE LEARNING
📺 Visual Phasing with a Twist - Segment Phasing (Part 1) youtu.be/MgZAcELjwPU
📺 Visual Phasing Part 1: youtu.be/fHZGdifd4KY
📺 Free Tool to Aid DNA Visual Phasing youtu.be/XNgqDPG3AYE
↪️ Grab your FREE genealogy research guides and templates at familyhistoryfanatics.com/resources
⚡ Want to grow your family tree faster? Join our membership program.
youtube.com/channel/UCmkKepHoafldMRZ4UNt0Akw/join
📗 Like to read? Check out these books
familyhistoryfanatics.com/books
----------------
✅ Let's connect:
✔️ Subscribe for more genealogy tips: tinyurl.com/FHFanaticsYouTube
✔️ Website: familyhistoryfanatics.com
✔️ Share Video Ideas: familyhistoryfanatics.com/contact
This video is part of a series of genealogy research tutorials designed to assist viewers in building their family tree or expanding their family history research. If you love genealogy like we do, subscribe to our channel!
#FamilyHistoryFanatics #genealogy #geneticgenealogy
If you’ve ever looked at your DNA segment data and thought something didn’t add up… you’re not alone. In this video, Andy answers a viewer's question about visual phasing and explains a key rule that many genealogists miss:
👉 You can’t go directly from a full match to a no-match.
Using real segment data, he walks through:
- The difference between half-identical and fully identical segments
- Why full matches are always surrounded by half matches
- How this rule helps you spot errors and interpret your results correctly
This question came from someone working with multiple siblings and an endogamous population, which makes understanding these patterns even more important.
👉 Watch the full Q&A session here: youtube.com/live/1r-lv0ZlWqI?feature=share
Have a DNA question you’d like answered in a future video? Drop it in the comments!
----------------
CONTINUE LEARNING
📺 Visual Phasing with a Twist - Segment Phasing (Part 1) youtu.be/MgZAcELjwPU
📺 Visual Phasing Part 1: youtu.be/fHZGdifd4KY
📺 Free Tool to Aid DNA Visual Phasing youtu.be/XNgqDPG3AYE
↪️ Grab your FREE genealogy research guides and templates at familyhistoryfanatics.com/resources
⚡ Want to grow your family tree faster? Join our membership program.
youtube.com/channel/UCmkKepHoafldMRZ4UNt0Akw/join
📗 Like to read? Check out these books
familyhistoryfanatics.com/books
----------------
✅ Let's connect:
✔️ Subscribe for more genealogy tips: tinyurl.com/FHFanaticsYouTube
✔️ Website: familyhistoryfanatics.com
✔️ Share Video Ideas: familyhistoryfanatics.com/contact
This video is part of a series of genealogy research tutorials designed to assist viewers in building their family tree or expanding their family history research. If you love genealogy like we do, subscribe to our channel!
#FamilyHistoryFanatics #genealogy #geneticgenealogy
