Uploaded June 2023 | Updated September 2026, 23 hours ago

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Discover the math and science behind how genetic genealogists can reliably identify relatives and trace ancestry using our DNA, despite the striking similarities among humans.
🤔 Are all humans 99% the same? 👉🏼 youtu.be/hcDhbK-OQgg

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CONTINUE LEARNING

ShowNotes: familyhistoryfanatics.com/math-behind-dna-matches

📺 Do Twins Have the Same DNA? youtu.be/_QNhjPfBaLc
📺 Genetic Genealogy 101: Principles You Need to Know youtube.com/playlist?list=PLcVx-GSCjcdnEg-YtkXA7Nj2YxxamaYKA

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Chapters

0:00 - Introduction and Question
0:09 - Understanding DNA Similarity
1:33 - Single Nucleotide Polymorphisms (SNPs)
3:10 - The Enormity of Genetic Variations
5:33 - Genetic Testing and Identifying Differences
7:06 - Conclusion

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