Heredity, Natural Selection, and Evolution

Highlights of Evolution

What does species diversity have to do with evolution?

Species diversity is direct evidence that evolution has occurred. When species can be identified in which individuals share a number of significant traits while also having some unique adaptations, it is logical to assume that the common traits are the result of common origin while the unique ones demonstrate adaptive radiation. An example of the significance of species diversity would be Darwin’s finches of the Galapagos Islands. While the species share a common body structure that is inherited from a common ancestor, each species also demonstrates variations in beak size and structure that are indicative of their adaptations to local environments and the type of food available.


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