The resource that will be prepared for this case will be a physical model to explain comparative anatomy. Designing a physical model is the best choice to use because it will give a visual understanding of the topic being discussed. Comparative anatomy refers to the study of differences and similarities in the structure of various species. This is among the topics covered in evolution; it helps an individual understand the theories of revolution by being able to distinguish the structure of different species, especially those which are closely related (Haendel et al., 2014). The physical model resource to be created will involve drawing of diagrams such as the sculpture of a whale as well as label its part accurately. In comparative anatomy, all vertebrates have almost the same bone structure because they share a common source. For example, the forelimbs of a whale are the same as that of a cat, human, and bats.

Thus, comparative anatomy is an interesting topic that requires one to use a material that will bring a clear understanding of the topic. For example, it can be confusing for a student to hear that the bone structure of a whale is the same as that of a human if this is not represented practically. Therefore, the physical model will also include a collection of fossils and skull that will be labelled according to the classification of the species (Haendel et al., 2014). However, even though these species have the same bone structures such as the similarity of the whale’s forelimb with that of a cat, the body parts are adapted to carry out different tasks. For instance, the skeletal parts of a whale such as its fins are used to swim, but it does not have a wing. Thus, this is an indication that each classification of the species is suited with feature that will help them adapt to their various environment.

The similarity in the anatomical structures emerges because all vertebrates have the same source; however, they underwent natural selection and mutation, where each structure adapted to their respective habitats. The physical model to be created will also show how the various body parts of the animals changed. The resource will have a diagrammatic representation of both homologous and analogous structure. In homologous structure, different species have the same bone composition and structure because they have a common origin or descent (Haendel et al., 2014). Therefore, this structures may or may not carry out the same task; depending on the physical orientation of the animal. On the other hand, analogous structure, organisms have similar structures because they were exposed to the same environment during the mutation period. Additionally, this structures paly the same role, even though they do not have a common descent.


In conclusion, I think that using a physical model to explain the existing differences and similarities in the structure of various species will helpful to the students and anyone else who would like to increase his or her knowledge of evolution. This is because the physical model will have a real representation of the bone structure, which will be obtained from the archive or scientific labs. The process of preparing this physical model will also involve creating a sculpture to represent the bone tissues or fossil of the various organisms.




Haendel, M. A., Balhoff, J. P., Bastian, F. B., Blackburn, D. C., Blake, J. A., Bradford, Y., … & Hayamizu, T. F. (2014). Unification of multi-species vertebrate anatomy ontologies for comparative biology in Uberon. Journal of biomedical semantics, 5(1), 21.




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