Question

What does homology mean?

Answer 1

Homology:

1. Homology is the similarity in structure between different organisms based on their descent from a common, evolutionary ancestor.
2. Homology refers to the same structure but different in function.
3. For example, The arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale are homologous structures.
4. The difference in function is due to evolutionary change in the ancestor.