Some fish have bony fins.If the body of water they are in dries out,these fins can be used to help the fish "walk" to another body of water.In this context,bony fins are an example of ________.
A)an exaptation
B)an adaptation
C)a macroevolutionary event
D)paedomorphosis

Question

Quizplus · Accepted Answer

Bony fins being used to "walk" to another body of water is an example of an exaptation, which is a trait that has been co-opted for a use other than the one for which natural selection has built it.

Some Fish Have Bony Fins