The human upper arm bone (the humerus)is structurally similar to the upper wing bone of a bat. The structural similarity is an example of:

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Homologous structures are structures that have a similar structure due to a common ancestor, even if they serve different functions in different organisms. The fact that the human upper arm bone and the bat wing bone share a similar structure suggests that they evolved from a common ancestor with this characteristic structure. Analogous structures serve similar functions in different organisms but do not reflect a common evolutionary origin. Vestigial structures are remnants of structures that were once functional but are no longer useful in its current form. Adaptation is the process by which an organism becomes better suited to its environment through genetic changes. Mutation is a genetic change that can lead to a new variation in a population.

The Human Upper Arm Bone (The Humerus)is Structurally Similar to the Upper