A bird’s wing, a dolphin’s flipper, and a cat’s paw are homologous structures. What about these structures supports the theory of evolution?
They prove that the limbs of all land animals evolved from wings and fins.
They are good examples of vestigial structures.
They are evidence that the animals had a common ancestor.
They all have similar sizes and functions.

Question

A bird’s wing, a dolphin’s flipper, and a cat’s paw are homologous structures. What about these structures supports the theory of evolution? 
       They prove that the limbs of all land animals evolved from wings and fins.
       They are good examples of vestigial structures.
       They are evidence that the animals had a common ancestor.
       They all have similar sizes and functions.

angeleyes108 · Answer

C. They are evidence that the animals had a common ancestor.

anonymous · Answer

they are all common ancestors