Analogous & Homologous Structures
The author of this report is asked to answer several questions about anatomical features. Namely, the author will be focusing on the difference between analogous and homologous structures. Of course, the assignment describes that these features are instrumental to the proper classification of species. The advance of technology has increased and improved the ability for scientists and biologists in particular to engage in this behavior but it has been a science for quite a while. While some people are under-informed about what analogous and homologous structures and what it all means, the author of this report would deign to educate both the author as well as anyone new to the subject that might read this report,.
Differences Explained
As neatly explained by a website ran and operated by the University of California at Berkeley, homology/homologous structures are those that were inherited from the same common ancestor. For example, eye color in two grandchildren from the same grandparents would be sharing a homologous trait. On the other hand, a sample of analogy (analogous) evolution is when there are similarities due to other factors. This is otherwise known as convergent evolution. As explained by the Berkeley website, convergent evolution is when "two distinct lineages evolve a similar characteristic independently of one another. This often occurs because both lineages face similar environmental challenges and selected pressures" (Berkeley, 2015). For example, blue is a fairly uncommon eye color. If two people have it, it COULD mean it is because of a common ancestor. That would make it a homologous evolutionary result. However, if they do not share a common ancestor, than it is an analogous results. Meaning, it is a matter of correlation rather than causality. The former is when two things...
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