Final answer:
A typical nuclear family consists of two parents and their children living in the same household. This model is common in societies valuing geographic mobility, while the extended family includes other relatives and is often valued for labor and self-subsistence.
Step-by-step explanation:
A typical nuclear family consists of two parents and their immediate biological offspring or adopted children. The nuclear family is often regarded as the smallest family structure and has been predominant in various societies, particularly where geographic mobility is important. This family model is characterized by the presence of married parents and their children living together as the core of the household. While the traditional two-parent household with one or more children has become less typical over the generations, the nuclear family concept continues to be relevant in modern society. In contrast, an extended family includes not only the immediate family but also relatives like grandparents, aunts, uncles, and cousins. Extended families may also function as a single integrated unit, especially in societies that place a high value on labor and self-subsistence.