In this episode of the Legacy Tree Podcast, the team at Legacy Tree Genealogists features their expert DNA researcher Caleb Anderson to explain mitochondrial DNA (mtDNA) and how it can trace a direct maternal line back thousands of years. Caleb breaks down how mtDNA differs from autosomal DNA, Y-DNA, X-DNA, what mtDNA can (and can’t) reveal about traits, and why it changes so little across generations.

The conversation covers haplogroups as an “address” on humanity’s mtDNA family tree, the concept of “mitochondrial Eve,” and the strengths and limitations of using mtDNA for ancestry research and match lists. They discuss practical strategies for breaking maternal-line brick walls, accuracy and relationship limits, testing options, and why FamilyTreeDNA is best for dedicated mtDNA testing, with notes on unknown parentage cases.