SNP

A commercial ancestral Y-DNA test ONLY explores the paternal line, and it can therefore be used to pin one’s direct male ancestors to specific locations at specific time points in history.

(Updated December 2021) When commercial DNA testing began it focused completely on Y-DNA STR testing. While Y-DNA STR results can routinely be used to pinpoint a paternal origin

In June 2018 Irish Origenes was commissioned to do a Y-DNA Case Study report for a Mr David McGinnis from Oregon in the USA.