Feathers in birds appear to have first been selected for as insulation but later conveyed a new advantage in helping create light aerodynamic surfaces. This switch in function is an example of ________.
A)allopatric speciation
B)a prezygotic barrier
C)an exaptation

Question

Quizplus · Accepted Answer

Exaptation refers to a trait that initially serves one function and is later co-opted for a new use, as seen with feathers initially used for insulation and later for flight.

Feathers in Birds Appear to Have First Been Selected for as Insulation