Respuesta :

A homologous structure is an example of an organ/bone that is in different animals.

Sources- 
examples.yourdictionary.com/homologous-structure-examples.html
A homologous structure is a example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor. In other words it’s when very different animals have bones that appears very similar in form or function and seem to be related.