Which of the following statements is correct?
A) Wings have evolved independently four times in vertebrates.
B) Wings arose as a result of new "wing genes."
C) Wings arose as modifications to already existing structures.
D) Wings have different skeletal components in birds and bats.
E) Wings have similar structural components in pterosaurs and insects.

Question

Quizplus · Accepted Answer

Studies have shown that wings evolved as modifications to already existing structures, such as forelimbs, in different groups of animals. This is supported by the fact that wings in different groups have different skeletal components and varying degrees of similarity in their structural components. Therefore, statement A, B, D, and E are incorrect.

Which of the Following Statements Is Correct