Testing the modern SNP mutations on the Y chromosome brings about the following benefits to Clann MacAodhagain descendants:

• Identifies whether or not one’s MacAodhagain lineage is descended from the chiefly line (R-BY198) or from one of the other Egan/Keegan groups.
• Provides a knowledge of how the clan fits into the overall picture relative to other families and clans (eg. our distant Ui Maine cousins like Larkin and Dunn)
• Instructs a developing knowledge of which lines represent which cadet branches of the clan.
• Helps establish a link to one of these cadet lines to help direct genealogical efforts using paper records and written genealogies such the Irish Annals.
• Allows connection to other MacAodhagains around the world who are shown to be closely related for pooling genealogical information.
• Provides newly discovered mutations specific to particular lines which can then be easily and cost-effectively used to check if groups of MacAodhagains are related or not
• Provides access to what can become a life-long hobby as new results and developments occur all the time.
• Creates a potential means for identifying descendants of the chiefly lines.