Structural nature of relationships among members of a household typically in reference to a MINOR residing in the same home. More broadly any organizational framework that determines family membership, and the functions and hierarchical position of family members (https://eric.ed.gov/?qt=Family+Structure&ti=Family+Structure).
The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition.