FTDNA is the market leader for both Y-DNA and mtDNA testing, and has the world’s largest Y-DNA and mtDNA genealogical matching databases. They are the only company that allows complete integration of Y-DNA, mtDNA and autosomal DNA test results for genealogical purposes. They host a wide variety of surname projects, haplogroup projects (Y-DNA and mtDNA), and geographical projects. Experienced and knowledgeable volunteer project administrators can often provide advice and help with the interpretation of results. They are not the first choice for autosomal DNA because of the smaller database but matches are more likely to be responsive and interested in genealogy.
Y-DNA Tests: Y-DNA testing examines the Y chromosome passed only from father to son and can therefore be used to gain a better understanding of your paternal line. This can be a very interesting study for those focused on surname research, especially since the Y chromosome can give information about deep and recent roots. Because only men carry this chromosome women will need to test their father, brother or other male relation to use this test for genealogy purposes. Again, FTDNA is the leader in this type of testing and has a wealth of information, groups and forums to help.