A genetic family tree is the list of genealogical ancestors from whom you inherited DNA. One of the goals of genetic genealogy is to recreate this genetic family tree through a process called “chromosome mapping.” Chromosome mapping uses cousin matches to identify which segments of DNA came from which ancestors, thus recreating your genetic family tree. We’ll look at the fundamentals of chromosome mapping and some tools you can use to begin to map your DNA.
Blaine Bettinger, Ph.D., J.D., is an intellectual property attorney by day and a genetic genealogist by night. In 2007 he started The Genetic Genealogist (www.thegeneticgenealogist.com), one of the earliest blogs on the topic. Dr. Bettinger has been interviewed and quoted on personal genomics topics in Newsweek, New Scientist, Wired, and others. He authored I Have the Results of My Genetic Genealogy Test, Now What? in 2008, which is distributed by Family Tree DNA to all of their new customers.
Blaine frequently authors articles and gives presentations to educate others about the use of DNA to explore their ancestry. He is an instructor for genetic genealogy courses at the Institute of Genealogy and Historical Research (IGHR), Salt Lake Institute of Genealogy (SLIG), Genealogical Research Institute of Pittsburgh (GRIP), Virtual Institute of Genealogical Research, and Family Tree University. Blaine was also recently elected to the New York Genealogical and Biographical Society's Board of Trustees, and graduated from ProGen Study Group 21 in 2015.