yDNA & mtDNA Testing
DNA testing allows the male and female lines to be traced back over long periods. Dick Towey, Clan Genealogist 2004 to 2012, undertook the Towey Clan DNA Project to help bridge some of the major gaps in the Towey genealogy.
Male yDNA traces the male line from son to father to grandfather using the male or Y chromosome (no females have the Y) for 2 types of tests: (1) most male tests analyze Short Tandem Repeat (STR) markers to establish common ancestry within recent centuries, and (2) the less-used Single Nucleotide Polymorphism (SNP) test enables the analysis of male ancestry back over hundreds of generations.
Female mtDNA testing traces the X chromosome from daughter (or son in the same generation) to mother to grandmother, etc., to establish common ancestry in the female line accumulated over many thousands of years.
Dick prepared an information paper about Towey Clan DNA Genetics which has more DNA information.
Some Toweys had yDNA tests that bridged some major gaps in our Towey documented genealogies. The STR tests of our yDNA show that most Toweys tested are genetically close to the O’Neill Clan of Co. Tyrone – i.e. along with about 20 percent of all other Irish males, we probably descend from Niall of the Nine Hostages, an ancient leader in 500 AD.
A yDNA comparison chart for a few Toweys of Irish heritage, together with more technical DNA information, may be viewed at the Towey Clan DNA Information Chart.
If you wish to participate in the Towey Clan male yDNA project, details are at www.FamilyTreeDNA.com. At its Search Your Last Name block (upper left of web page), type Towey. For yDNA testing, the Towey Group Administrator is Mike Towey at firstname.lastname@example.org
On the Maternal side, reach into the past through mtDNA testing to uncover the deep ancestral origin of your direct maternal line (your mother, your mother’s mother, etc.) and connect with genetic cousins. Here again, details are at www.FamilyTreeDNA.com.