Many of us who have tested our DNA have done so to satisfy our curiosity about our ethnic origins or to find unknown or elusive relatives.  Some of us learned a little about our ancient origins based on our ethnicity, depending upon the company with which we had tested. People who have gone further in their genetic genealogy study have had their Y-DNA or mitochondrial DNA tested.  Usually these tests are used to confirm surname lineage in the case of Y-DNA or maternal lineage through mtDNA.  One outcome is learning one's haplogroup, either Y-DNA or mtDNA, and they are different! Judy G. Russell, the Legal Genealogist, posted this:  " Rob Spencer is a scientist who’s developed a set of tools for use with DNA results — visualizing some of our genetic genealogy. "He calls his website, Tracking Back , a place “for genetic genealogy tools, experimentation, and discussion.” And he offers a lot — to think about, and to play with. "One tool in particular is really neat f...