Genetic Genealogy in Practice, the first workbook on genetic genealogy, the book provides family historians and genealogists who have just begun to explore genetic genealogy practical, easy to understand information that they can apply to their research. Readers learn the basic concepts of genetic genealogy. They then build on that knowledge as they study the testing, analysis, and application of Y-DNA, X-DNA, mitochondrial DNA (mtDNA), and autosomal DNA (atDNA) to reach and support genealogical conclusions. Each chapter includes exercises with answer keys for hands-on practice.