The Particular Power of Y-DNA Testing with Falmouth Genealogical Society

Saturday, November 14, 2026 · 10:00 AM – 12:00 PM

Adult Collections Room — 300 Main St., Falmouth, MA

The Falmouth Genealogical Society (FGS) will hold its monthly talk Saturday, November 14, 2026, from 10:00 am-12:00 pm at the Falmouth Public Library, 300 Main Street, Falmouth. This talk is free and open to the public. It will be held in person and is also available via Zoom. For the Zoom credentials, please contact president@falgen.org by Friday, November 13, 2026. For more information, visit the FGS website at www.falgen.org. Speaking in person, FGS Board President Tim Martin will present: The Particular Power of Y-DNA Testing. Unlike the more commonly tested autosomal DNA, Y-DNA is duplicated exactly from father to son, except roughly every few generations a single “SNP” mutation occurs which is passed on to all subsequent male descendants, thereby defining distinguishable male lineage branches through all time. This purely father to son lineage is referred to as the patrilineal line. This talk will focus on the particular power of Y-DNA testing to reach back in time and positively reveal patrilineal ancestors and their patrilineal descendants. Any two males taking a Big-Y test can determine an estimate of time to a common patrilineal ancestor. We examine the case of Laurens…