What relationship does current DNA evidence show about the relationship of the sperm whale to other cetaceans?

Current DNA evidence indicates that sperm whales (Physeter macrocephalus) share a close evolutionary relationship with other cetaceans, particularly the beaked whales (family Ziphiidae). Genetic analyses suggest that sperm whales and beaked whales diverged from a common ancestor relatively recently in evolutionary terms, highlighting their shared lineage within the larger group of toothed whales (odontocetes). This relationship underscores the complex evolutionary history of cetaceans, revealing insights into their adaptations and ecological roles in marine environments.