Genetic genealogy

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Genealogists for hundreds of years have relied on records and pedigrees to trace family lines. More than one has run into a brick wall, discovered an error from a prior researcher, or simply had a gut feeling that something wasn’t adding up. Until recently there was no way to help confirm your paper trails or even those hunches you might have had. Now, with affordable DNA testing, many genealogists are discovering this new tool in their kit. Unfortunately, most are not sure what they should do with it. In this lecture you will learn the basics of genetics, how DNA can help you, and the tests available to you.

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Genetic genealogy

  1. 1. Genetic Genealogy: Using DNA as a Tool in Genealogy Shannon Combs-Bennett Trials and Tribulations Family History http://tntfamilyhistory.blogspot.com/ tntfamhist@kandsbennett Office: 540-735-0858 @tntfamhist By PresenterMedia.com
  2. 2. •Housekeeping Items Please silence all electronics Questions will be taken at the end of the presentation Handouts are provide for your use, please do not distribute them without permission Please do not take photos or audio/video recording of the presentation Shannon Combs-Bennett (c) 2014
  3. 3. Explanations, myth de-bunking, and the basics •WHY SHOULD I DO THIS Shannon Combs-Bennett (c) 2014
  4. 4. •Genetics and Genealogy • How do they go together? • Explain • Using to me what’s the big deal DNA as a tool • Confirm • Find your research new family links • Helping other researchers Shannon Combs-Bennett (c) 2014
  5. 5. •Three Common Concerns • Will an insurance company or my employer have access to my DNA? • I don’t have to exhume my ancestors do I? • These tests are done by blood draws and are very expensive Shannon Combs-Bennett (c) 2014
  6. 6. •Useful Terminology BASIC DNA TERMS • • • • • • Allele / Gene Bases • A – Adenine • T – Thymine • C – Cytosine • G - Guanine Chromosomes DNA Genome Locus/marker GENETIC TERMS • • • • • • • Hapolgroup Haplotype MRCA Phylo-tree SNP STR Sub-clade Shannon Combs-Bennett (c) 2014
  7. 7. •Types of DNA Testing • Autosomal (admixture) • Y-DNA • mtDNA • X-DNA Shannon Combs-Bennett (c) 2014
  8. 8. What it is and what it can tell you •AUTOSOMAL DNA TESTING Shannon Combs-Bennett (c) 2014
  9. 9. •What is Autosomal DNA • Term used to describe the DNA you inherit through autosomal chromosomes, not sex determining chromosomes. Image from scotlandsdna.com Shannon Combs-Bennett (c) 2014
  10. 10. •Wait…What Just Happened? Parents Children Grandchildren Great grandchildren Image from ricochetscience.com Shannon Combs-Bennett (c) 2014
  11. 11. •What Will it Show me • • Confidence for about 7 generations Can confirm or give new leads to paper genealogy research Shannon Combs-Bennett (c) 2014
  12. 12. •Example Result: Ancestry DNA Shannon Combs-Bennett (c) 2014
  13. 13. •Example Result: FTDNA Chromosome Comparison Shannon Combs-Bennett (c) 2014
  14. 14. What the men in your family can tell you •Y-DNA TESTING Shannon Combs-Bennett (c) 2014
  15. 15. •What is Y-DNA • • In general, it is the sex chromosome that determines maleness Passed from father to son Image from scotlandsdna.com Shannon Combs-Bennett (c) 2014
  16. 16. •Y-DNA Results • Verify male lineage • • • Surname Studies Guild of One Name groups Probable Haplogroup determinations • Mutation changes from ancestral origins Shannon Combs-Bennett (c) 2014
  17. 17. •Example Results: Ancestry Shannon Combs-Bennett (c) 2014
  18. 18. •Example Results: FTDNA Shannon Combs-Bennett (c) 2014
  19. 19. •Reading Your Results Name Hap 385 385 389 459 459 Grp 19a a b 388 389I II 390 391 392 393 426 437 438 439 441 442 444 445 446 447 448 449 452 454 455 456 458 a b Unknown Dorset R1b 15 11 14 12 13 29 24 10 13 13 12 15 11 13 14 18 11 12 12 20 19 28 30 11 11 16 17 9 9 Combs Sample 1 R1b 15 11 14 12 13 29 24 10 13 13 12 15 11 13 14 18 11 12 12 20 19 28 30 11 11 16 17 9 9 Combs Sample 2 R1b 15 14 14 12 13 29 24 10 13 13 12 15 11 13 14 18 11 12 12 20 19 28 30 11 11 16 17 9 9 My Father R1b 15 11 14 12 13 29 24 10 13 13 12 15 11 13 13 13 11 12 12 20 19 29 30 11 11 16 17 8 9 Shannon Combs-Bennett (c) 2014
  20. 20. •Haplogroup Migration Map Shannon Combs-Bennett (c) 2014
  21. 21. What your mother’s, mother’s, mother can tell you •MTDNA TESTING Shannon Combs-Bennett (c) 2014
  22. 22. •What is mtDNA • mtDNA is passed from a mother to all of her children • mt = Mitochondira Image from scotlandsdna.com Shannon Combs-Bennett (c) 2014
  23. 23. •mtDNA Results • • • Tool for deep ancestry identification Probable haplogroup identification Tests HVR1 and HVR2 regions Shannon Combs-Bennett (c) 2014
  24. 24. •Example Results: FTDNA Reconstructed Sapiens Reference System Shannon Combs-Bennett (c) 2014
  25. 25. •Example Results: Ancestry Shannon Combs-Bennett (c) 2014
  26. 26. •Haplogroup Migration Map Shannon Combs-Bennett (c) 2014
  27. 27. A test for those “in-between” ancestors •X-CHROMOSOME TESTING Shannon Combs-Bennett (c) 2014
  28. 28. •What it can tell you • • • Men receive X-Chromosome from their mother Women receive and XChromosome from each parent Inheritance is similar to Autosomal DNA • X-Chromosomes crossover just like autosomal chromosomes Shannon Combs-Bennett (c) 2014
  29. 29. •Results For Women Shannon Combs-Bennett (c) 2014
  30. 30. •Results For Men Shannon Combs-Bennett (c) 2014
  31. 31. •Percentages Inherited Chart from Blain Bettinger, The Genetic Genealogist Shannon Combs-Bennett (c) 2014
  32. 32. Labs, books, websites, and groups •TESTING COMPANIES AND RESOURCES Shannon Combs-Bennett (c) 2014
  33. 33. •A Few Testing Companies • FTDNA • 23andMe • AncestryDNA • National Geographic and Geneographic Project Shannon Combs-Bennett (c) 2014
  34. 34. •Websites, Blogs, and Books • • • • • Genetics Home Reference DNA Interactive International Society of Genetic Genealogists (ISOGG) ISOGG Wiki Guild of One Name Studies • • • • Your Genetic Genealogist by Cece Moore The Genetic Genealogist by Blaine Bettinger DNAeXplained by Roberta Estes On-line Journal of Genetics and Genealogy • • • • The Practical Guide to the Genetic Family History. How to DNA Test Our Family Relationships. DNA and Genealogy. Trace Your Roots with DNA: Using Genetic Tests to Explore Your Family Tree. Shannon Combs-Bennett (c) 2014
  35. 35. THANK YOU FOR ATTENDING Shannon Combs-Bennett Trials and Tribulations Family History http://tntfamilyhistory.blogspot.com/ tntfamhist@kandsbennett Office: 540-735-0858 @tntfamhist Shannon Combs-Bennett (c) 2014

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