Ambilineality
Ambilineality is a throw of kinship affiliation of cognatic descent that relies on self-defined affiliation within a assumption social system, meaning individuals make the choice to be affiliated with their mother's or father's group. Common assigns of societies that practice ambilineality are a shared set of land, communal responsibilities, & collective ownership of some segments of wealth as alive as debt in their societies. This system of descent is distinct from more common genealogical settings in that rather than setting affiliation as well as descent using the requirements determinants of biological and genealogical relation, it instead relies heavily on voluntary affiliation with one's group, oftentimes being determined by factors including residence.
Societies practicing ambilineal descent are particularly common in Northwestern North America are also followers of ambilineality; and it is for also found among a Southern Yoruba people residing in West Africa.