An introduction to Y-DNA, mitochondrial DNA, and autosomal DNA testing, including how each of these types of DNA are inherited, how they are tested, who you should have tested, and where you should purchase testing.
Blaine Bettinger, Ph.D., J.D., is a professional genealogist specializing in DNA evidence. In 2007 he started The Genetic Genealogist ( www.thegeneticgenealogist.com ), one of the earliest blogs on th...