In some genetic genealogy circles, debates rage over whether the exact start and endpoints of chromosome segments matter between DNA matches.
🤔 What is DNA Overlap on GEDmatch? 👉🏼 [ Ссылка ]
Andy compares 23andMe, MyHeritage, and GEDmatch segment start and endpoints to address this question. WARNING: This is an advanced genetic genealogy topic.
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Chapters:
0:00 - Introduction
1:01 - Comparison of Chromosomes: 23andMe, MyHeritage, GEDmatch
1:28 - Analyzing Chromosome Number One
1:59 - Discrepancy in Segment Interpretation
2:22 - MyHeritage's Split Segment Interpretation
2:39 - Segment Counting on GEDmatch
3:12 - Examining Segment Numbers and Variations
3:58 - Position Differences in Chromosome One Segments
4:59 - Identifying Low and High Numbers
5:55 - Highlighting Differences in High Positions
6:51 - Exploring Centimorgan Differences
7:01 - Comparing Segment Centimorgan Values
8:23 - Diverse Number of SNPs Analyzed
9:38 - Dissecting 23andMe, GEDmatch, and MyHeritage
10:15 - Segment Breakdown on MyHeritage
11:04 - Matching Centimorgans on Overlapping Segments
11:34 - Significant Centimorgan Difference
12:07 - Start and End Positions vs. Centimorgans
13:07 - Limited Scope of DNA Testing
13:41 - Matching and Non-Matching SNPs
14:06 - Considerations for Segment Analysis
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