Final answer:
Butterfly wings and bat wings are considered analogous because they serve similar functions but do not share a common evolutionary origin.
Step-by-step explanation:
From an evolutionary perspective, butterfly wings and bat wings would be considered analogous structures because they did not evolve from the same feature in their common ancestor. The term analogous refers to structures that are similar because they perform a similar function, not because they were inherited from a common ancestor. On the other hand, homologous structures are those that did originate from a common ancestor and share a similar embryonic origin. Butterfly wings and bat wings are examples of convergence in evolution, where similar traits arise independently in different lineages due to similar selection pressures.
From an evolutionary perspective, butterfly wings and bat wings would be considered analogous structures because they didn't evolve from the same feature in their common ancestor. Analogous structures are similar in function and appearance, but do not share an origin in a common ancestor. The wings of bats and insects are examples of analogous structures; they both evolved independently and serve the similar function of flight. These structures are not homologous, meaning they do not share a similar embryonic origin.