Final answer:
Exogamy and patrilocality are customs that regulate marriage and residence, influencing the structure and stability of families by reducing competition, preventing inbreeding, and ensuring socioeconomic support.
Step-by-step explanation:
The practices of exogamy and patrilocality are integral to the structure and sustainability of a family unit within many societies. Exogamy is the practice of marrying outside a specific cultural group or kin, which can help to reduce competition among and between males and females within a family unit, and prevent issues associated with inbreeding. Additionally, this practice promotes genetic diversity and can forge alliances between different groups or families. On the other hand, patrilocality involves a newly married couple living with or near the husband's family. This system can be traced back thousands of years and is often associated with patriarchal societies. It aims to provide a stable socioeconomic household by maintaining close familial support and shared labor and resources. However, it has been thought to make women outsiders in the home and disconnect them from their own blood relatives.