A clear example of a lineage is the unbroken ancestral descent tracking a person back through their parents, grandparents, and earlier generations to a specific founding ancestor. In biological sciences, an example includes the evolutionary lineage connecting modern birds directly to theropod dinosaurs. In corporate and cultural history, an example is a royal dynasty—such as the British royal family or the Japanese Imperial House—where political power and heritage pass sequentially through a defined hereditary line of succession.