MARK TAKAHASHI: I'm Edmunds editor Mark Takahashi. And here's an Expert Rundown of the 2017 Ford Escape. The Ford Escape is a middle of the road choice among compact crossover SUVs. It does everything well without any particular high or low points.
Homologous Structures. A homologous structure is an organ, system, or body part that shares a common ancestry in multiple organisms. This definition is found in evolutionary biology, and uses the meaning of having a similar structure or origin.omologous Structures. A homologous structure is an organ, system, or body part that shares a common ancestry in multiple organisms. This definition is found in evolutionary biology, and uses the meaning of having a similar structure or origin.
Features of animals that have similar structure are classified as homologous if they have a common evolutionary origin, even if they have different functions in different animals. A classic example of homologous structures is that of the wing of a bat and the arm of a human. Both have similar internal bone structure, and as mammals, the evolutionary origin is clearly similar. However, the wing of a bat is utilized for flying, whereas the arm of a person is used to carry items or to perform other tasks and is not suited for flight.