A Y-DNA test looks at male inherited Y-chromosome DNA (Y-DNA). The Y chromosome is passed on from a father to his sons. Thus, it is only found in males. Y-DNA testing can then be used to trace clearly a direct paternal line.

Y-chromosome DNA Inheritance
1 2 3
Father’s Father
Father
Father’s Mother
You
Mother’s Father
Mother
Mother’s Mother

A Y-DNA SNP test is a test for single nucleotide polymorphisms (SNPs) that determine a male’s place (branch) on the ancestral tree for all mankind. Deepclade testing offers in-depth information about the ancient ancestry and historic migrations of your direct paternal line.

Family Tree DNA offers individual SNP tests to current customers who have taken one of our Y-DNA STR (Y-DNA12, Y-DNA25, Y-DNA37, Y-DNA67, or Y-DNA111) tests. We use the Y Chromosome Consortium’s phylogenetic tree.

At this time, we feel that most people will find the Geno 2.0 test to be the best value for Y-chromosome deep ancestry testing. After taking the Geno 2.0 test, you will be able transfer all positive Y-chromosome SNP results to your Family Tree DNA account.

For those who have already taken one of our STR tests or who have transferred results in from the Geno 2.0 test, we offer many individual SNPs including those discovered through our research programs.