Complex sentence: A Surname DNA project exists for male individuals with the Pike surname, in which a genetic study of submitted DNA samples shows almost 20% have a genetic relationship to the same male line as Zebulon M. Pike, though he left no male descendants.
Split into simpler sentences: A Surname DNA project exists for male individuals with the Pike surname. A genetic study of submitted DNA samples shows almost 20% have a genetic relationship to the same male line as Zebulon M. Pike, though he left no male descendants.