A trait evolved for one function but later co-opted for another is called:
Exaptation reflects key principle in quiz on section a solved pyqs, where evolutionary mechanisms shape genetic variation and adaptation. In this context, Exaptation aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why Exaptation fits helps integrate natural selection, environment.
Ref: Campbell Biology, Evolution Chapters, Selection Types.