It usually occurs when a species inhabits a new environment, or is in a new niche, that does not require an old structure.Segment 2: Example of Homologous Vestigial and Analogous StructuresAn example of a Homologous structure are the wings of birds. Vestigial structures are remnants of some past feature of the organism that is no longer useful. These structures were not from some common ancestor, but instead were developed in multiple species independently to adapt to a similar environment. These structures do not necessarily look the same, but are instead just structurally similar.Analogous structures are similar structures that evolved to serve the same purpose. Homologous structures are organs or skeletal elements that, due to similarity, suggest that they come from a common ancestor. Today we will be discussing what these different structures are and how they relate to evolutionary biology.Segment 1: Introduction to Homologous Vestigial and Analogous StructuresSo, what are homologous, vestigial, and analogous structures? Each of these terms refers to the structure of something about an organism in a different way.

My AP Biology ThoughtsEpisode #15Welcome to My AP Biology Thoughts podcast, my name is Alex Jing and I am your host for episode 15 called Homologous Vestigial and Analogous Structures. About Homologous and Analogous Structures Episode

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