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Family Tree DNA is holding a Father's Day sale that ends at 11:59 pm on June 20th. The Y-37 test is on sale for $99 plus postage and the Y-111 test is on sale for $219 plus postage. Although other tests are also on sale, these are the only tests...

You should test more Y-chromosome DNA short tandem repeat (STR) markers when you wish to compare additional markers against others with similar results. They will refine your matches for genealogical purposes. It does not increase the number of...

Y-chromosome DNA (Y-DNA) tests trace both recent and distant generations. The number of generations traced by a Y-chromosome DNA test depends on the type of test taken, short tandem repeat (STR) or single nucleotide polymorphism (SNP). STR such as...

Family Tree DNA is holding a DNA Day Sale from April 18h to April 25th. The Y-37 DNA test is being offered for $79 plus postage and the Y-111 DNA test for $199 plus postage. Please be advised that these are the only tests applicable to our project....

In 2006, a group of researchers explored the frequency of haplogroup R-M269 and the Western Atlantic Modal Haplotype (WAMH) in Ireland. They showed that haplogroup R-M269 accounts for 85.4% of the lineages in Ireland, but that a distinctive...