Homologous organs have:

Homologous organs are defined as organs that share a common structural plan and embryonic origin, even if they serve different purposes in different species. 1. **Common Ancestry**: The term 'homo' means 'same'. These organs are inherited from a common ancestor, which explains why their internal anatomy (bone structure, blood vessels, nerves) is remarkably similar. 2. **Divergent Evolution**: Over time, different species moved into different environments. To survive, these shared structures adapted to perform specific tasks. This process is called **divergent evolution**. 3. **Examples**: - The forelimbs of a **human** (used for grasping), - The forelimbs of a **cheetah** (used for running), - The forelimbs of a **whale** (used for swimming), - The forelimbs of a **bat** (used for flying). Despite having very different functions, all these limbs share the same basic skeletal pattern (humerus, radius, ulna, carpals, metacarpals, and phalanges). Therefore, homologous organs have the **same origin but different functions**.