science class 3rd
Below is a diagram indicating the limb bones of a crocodile, a bat, a whale, and a bird. Similar bones are highlighted in the same colors.
Crocodiles, bats, whales, and birds have similar limb bones. What do these similarities suggest?
A similar limb structure evolved in each species independently and by chance.
The common ancestor of birds and crocodiles was a whale.
Crocodiles, bats, whales, and birds evolved from a common ancestor.
Bats and crocodiles share an ancestor with whales but not with birds.