To identify the various lineages (branches) under I-FGC21765 and determine the possible historical connection of those lines to the ancient Viking sample (DAV-A9) from Dalvik, Iceland

We hope to recruit more testers who are positive for I-FGC21765 or appear to be positive for I-FGC21765 based on their Y-STR values in order to have the data we need to further develop these branches