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Evolutionary Divergence: The commonality that underlies differencesScience project video

Abstract

Evolutionary divergence refers to how different species are able to evolve from the a single species, as the result of populations becoming isolated from the rest of the species. If these isolated populations are exposed to different environmental demands, new species may evolve. A species of butterfly may have yellow wings. Imagine the destruction of the butterflies? habitat and that part of the population leaves the habitat for a new one. If the new habitat has different environmental pressures than the previous habitat, this population of butterflies will develop new adaptations in order to survive. For example, if the new habitat is barren and sandy, the butterfly may evolve a new wing color, that will help it blend in with its new environment. In this manner, a new species of butterfly evolves. In this science fair project, you will create a display on evolutionary divergence.

Objective

Identify evolutionary divergent species.

Scientific Terms

Divergent Evolution, Species

Background

In evolutionary divergence, the changes in a species can vary, including physical outward characteristics, behavioral, or anatomical. A classic example of divergent evolution is the finches of the Galapagos Islands. Charles Darwin noticed how the finches that inhabited the island display great variation in their beak structure. The beaks of each species were specifically suited to the diet of the finch. Darwin theorized that finches had evolved from a single species in order to avoid competition for food sources. By developing a unique beak structure, each species could take advantage of a specialized diet; thus avoiding competition with other finches.

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