If you are related within the second degree by marriage or third degree by blood, you may be prohibited from serving on a committee. Prohibited degrees of relationship are defined as follows: (Blood) First Degree: Father, Mother, Son, Daughter Second Degree: Brother, Sister, Grandfather, Grandmother, Granddaughter, Grandson Third Degree: Aunt, Uncle, Nephew, Niece, Great Grandfather, Great Grandmother, Great Granddaughter, Great Grandson (and the spouses of the above persons are also included in the prohibited degree of relationship). (Marriage) First Degree: Father, Mother, Son, Daughter Second Degree: Brother, Sister, Grandfather, Grandmother, Granddaughter, Grandson