Homologous structures are defined as anatomical structures originating from the
same structure in ancestral form. For instance, a bird's wing and the front flippers of
a seal are examples of homologous structures. Which of the following does the
presence of homologous structures in vertebrates suggest?
An example of homologous structures in vertebrates is
where the wings of bats, front flippers of whales, and forelegs of four-legged vertebrates like dogs and crocodiles are all derived from the same ancestral tetrapod structure.
