Genealogy

 Chapter 7: Incorporating DNA Testing in a Family Study Questions 1-7 refer to the family tree of Henry Smith in Appendix A. Recipients of mtDNA of #2 unknown are circled; recipients of #1 Henry Smith's Y-DNA are highlighted. Recipients of mtDNA of #2 unknown are circled; of Y-DNA of #1 Henry Smith are highlighted 1. Assuming only end-of-line descendants are still living, is or are there any living who inherited the mtDNA of the unknown spouse #2 of Henry Smith #1? Yes, #41 Tommy Curtis. 2. Assume a living person is found and agrees to test and that the results indicate the mtDNA haplogroup is U5b1c1. Does this confirm or refute the family legend that Henry's unknown spouse #2 was Choctaw? Neither.  U5b1c1 is not a known Native American mt haplotype, so that rules out unknown's mother or her umbilical line being NA. Since that is the only line tested, the rest of her inheritance is as yet unknown. 3. Assuming only end-of-line descendants are living, is there anyone living...

  Genealogical Applications for X-DNA Chart from Appendix A; marked for X. Use for Q 1-7 1. Which ancestors shown may have contributed to the X-DNA of Ira Gerball (20)? 15, Marie Small. Men get no X-DNA from their fathers, only their mothers. Marie's ancestors are not in the chart. 4 2.  Which ancestors shown may have contributed to the X-DNA of Mandella Louise Smith (33)? Would Mandella have inherited X-DNA from all of these possible ancestors? Since Mandella is female, she got X-DNA from both her parents, 21 & 27 . The X she got from her father 27 came from his mother who is not shown in the chart. The X from her mother Mandy Wick 21 is from her parents, 12 & 16 . Again, her father Tom Wick 16 got his X from his mother who is not shown in the chart. Mandy's mother Emma Crocker 12 got her X-DNA from both her parents, 5 & 8 . And once again, her father Henry Crocker 8 got his X from his mother, but she is not in the chart. Her mother Emma Jones 5 got her X-DNA from...

 Genealogical Applications for atDNA Exercises for Chapter 5 1. Sisters with an AncestryDNA test get results; one matches to a predicted third to fourth cousin; the other does not. Should they both match? Why or why not. They could both match, or neither. About 90% of third cousins are detectable DNA matches; only about half of fourth cousins cousins. 2. Fred is testing numerous relatives in an attempt to map his chromosomes. He shares no detectable DNA with Victoria, a seventh cousin, who is a descendant of fifth great-grandparents. Can Fred conclude that these Quincy ancestors are not in his genetic family tree? No, testing one distant relative with whom he is likely not to share detectable DNA proves nothing. It is simply a lack of evidence. 3. Roy and Mike share a single 6.43 cM segment of DNA. Which company or companies will show them as genetic relatives? Which will not. At the present time, none of the testing companies will show them as matches. While AncestryDNA reported m...

 Chapter 4: Genealogical Applications for mtDNA Exercises. All the questions refer to diagrams in Appendix A: page 136 1. Which descendants shown inherited the mtDNA of Mary Ann (Smith) Jones (2) : 3, 4, 5, 11, 12, 21, 22, 33.  Mary Smith passed her mtDNA to all her children; 3, 4, 5 . Her son 3 Albert, did not pass his mtDNA to his children. His children got their mtDNA from their mother, 6. One daughter, Mary 4 , had only a son, 11 . That son had mtDNA from 2, but did not pass it to his children. They instead got mtDNA from his wife, their mother, 15.  Her daughter Emma, 5 , passed her mtDNA to her daughter Emma, 12 . Emma 12's daughter Mandy 21 gave the mtDNA from 2 to her daughter, Mandella, 33 . Emma Crocker 12 also passed mtDNA from 2 to her son Max 22 . Max had a daughter who had the mtDNA from her mother, 28.  2. Ira Gerball 20 died in Vietnam. ... Which people on the chart share the same mtDNA as Ira for purposes of identifying his remains?  Three peop...

 Chapter 2 Exercises 1. The goal is to determine when Isaac Ryan first bought land in what is now Jackson County, Mississippi. Can DNA evidence help achieve this goal? If so, how.  No. However, if could help provide more evidence that the tester is related to this Isaac Ryan if preliminary family tree research makes a clear and proven case that the tester is descended from this man. DNA provides no evidence that could help with a date of land purchase. 2. The goal is to determine whether the Isaac Ryan who first bought land in 1798 what is now Jackson County, Mississippi, is the ancestor of Jonathan Ryan. Can DNA evidence help achieve this goal? If so, how.  Again, if there is a complete family tree built and proof given with other evidence, DNA can provide *more* evidence of the descendancy. Y DNA can prove or disprove a shared male line. It cannot, however, prove parentage. Neither autosomal nor mitchondrial DNA would have any use here. 3. Nathan suspects that Ethan Kil...

  Genetic Genealogy in Practice by Blaine T. Bettinger, Debbie Parker Wayne. National Genealogical Socety; 2016 Chapter 1: Basic Genetics Questions to which you will want to know the answers What are the types of nuclear DNA? Autosomal Sex: X, Y What is the other DNA which can be tested for genealogical purpose?   Mitochondrial Which test can be taken only by one sex?   Y If the mother of a family has died, which of her children can be tested for mitochondrial DNA?   Any or all of them From which parent do you get your Y dna ?  Father  Your X?   Men: mother. Women: both What are the DNA variations tested for genealogical purposes?   SNPs and STRs(Y). Both are often called "markers." What is a SNP?  S ingle nucleotide p olymorphism What is an STR?   S hort t andem r epeat How much of our DNA is identical to all other humans?   99.9% What is a DNA match?   Enough matching DNA with a person above the threshold, usually 5-10 or 20...