Below is a diagram indicating the limb bones of a human, a crocodile, a bat, a whale, and a bird. Similar bones are highlighted in the same colors. Humans, crocodiles, bats, whales, and birds have similar limb bones. What do these similarities suggest?
The similarities in limb bones among humans, crocodiles, bats, whales, and birds suggest a common ancestry or evolutionary relationship. These organisms may have descended from a common ancestor that had similar limb bones, and over time, they have developed adaptations that suit their specific habitats and lifestyles. This concept, known as homology, points towards a shared evolutionary history among these organisms, even though they have different appearances and functions in their limbs today.
