Classical genetic genealogy deals with the Y chromosome and the mitochondrial DNA. The Y Chromosome test is for males only and traces the direct male lineage. The mitochondrial DNA test is for everybody and traces the direct female lineage. Recent advances in genetic genealogy make it possible to trace all lineages by testing the autosomes. Although the autosomes can be used to find ethnic mixes as well as recent cousins, it has some limitations.
Lecture presented by Stephen Morse creator of One Step Webpages. This free program is sponsored by the Santa Clara County Historical & Genealogical Society.