The Family Tree Guide to DNA Testing and Genetic Genealogy by Blaine T. BettingerMy rating: 4 of 5 stars
This is a comprehensive guide to understanding the different types of DNA testing and how these tests help genealogists to solve brick wall issues. The author does very well to explain the basics (and not so basics) of DNA, and what each test covers. The book covers tests from the 3 large testing companies: 23andMe, Ancestry, and Family Tree DNA. The book also provides charts and forms that the genealogist can use to get started on a "genetic genealogy" tree.
This is well worth the read, especially if you feel overwhelmed with the different options in DNA testing, or don't know how to interpret your results. I was really impressed at how well the author explained everything without getting too technical.
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