- Anatomy is the study of the structure and organization of living organisms, including their internal organs and external features.
- Anatomy provides evidence for evolution by revealing similarities in the structures of different species, suggesting they share a common ancestor; these shared features are often modified over time to suit different functions.
- A homologous structure is an anatomical feature found in different species that is similar in structure because it was inherited from a common ancestor, even if the function has changed.
- An example of a homologous structure is the forelimb bones (humerus, radius, ulna, carpals, metacarpals, phalanges) found in humans, cats, whales, and bats.
- An analogous structure is an anatomical feature found in different species that performs a similar function but evolved independently from different ancestral structures, not from a common ancestor.
- An example of an analogous structure is the wings of birds and insects, which both enable flight but have very different underlying structures and evolutionary origins.
- A. Homologous structures
- B. Analogous structures
- C. Homologous structures
- D. Analogous structures
- E. Analogous structures
Parent Tip: Review the logic above to help your child master the concept of homologous structures worksheet.
