Support Center How can I help you? Home / Support Center / Ancestry Categories Main Menu Account Settings Ancestry DNA Order Questions Family Tree Internal Messaging and Alerts “Ask a Relative” feature DNA Testing ‹ Go Back to Main Page Ancestry Ancestry (Y-DNA) What is the Y-DNA STR test? What is the benefit of the Y-DNA Haplogroup SNP test? What is Genetic Distance? How do I determine my Y-DNA haplotype using Y-STR markers? What is a multi-copy Y-STR marker? What is the Y-DNA SNP test? What is TMRCA? What is the difference between a Y-DNA haplotype and Y-DNA haplogroup? What is the Atlantic Modal Haplotype? Y-DNA Tutorial Ancestry (GENERAL) What is RMI? What is the Y-DNA STR test? How do I read by DNA Clan results? How do I find out if I have Jewish Ancestry? Am I Native American? How do I access my raw data? How do haplogroups tell me where my ancestors came from? Can Females Take the Y-DNA Test? What is the Y-DNA SNP test? Ancestry (mtDNA) Mitochondrial DNA Tutorial What variation occurs in the mtDNA? What is the revised Cambridge Reference Sequence? What does zero mutational distance mean?