A Y-STR marker test determines the number of repeats for several different STR markers. This resulting set of repeat numbers is known as a person’s Y-DNA haplotype (or Y-DNA profile).
The number of repeats for each Y-STR marker does not contain ancestral information by itself. But, it becomes useful when it is compared against other people or specific population groups. All men who descend from the same paternal lineage have the same or very similar Y-STR marker profiles.
Comparing your Y-STR marker profile against a database of populations allows you to find out which population groups are the closest match to your paternal lineage thereby uncovering your Y-DNA haplotype.
Trace Your Paternal Line
Over 100 free ancestry web apps including Marie Antoinette, the Romanov Family, etc. Login to access your maternal ancestry test results.
Free ancestry web apps are available to users who have taken the mtDNA Test.
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