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

Question 1

Multiple Choice

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

Correct Answer:

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