A family tree is a visual representation of a person's ancestry, showing how different generations are related. It typically starts with one individual at the base and branches out to include parents, grandparents, and further ancestors. Each branch represents a familial connection, making it easier to understand relationships within a family. Family trees can also include information about siblings, marriages, and children, providing a comprehensive view of a family's history. They are often used in genealogy to trace lineage and can help individuals learn more about their heritage and cultural background.