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Convergent/Di vergent Evolution Differences and Similarities are seen in Speciation Convergent Evolution Divergent Evolution Divergent Evolution Closely related appears very different When speciation occurs, two populations that were once similar appear very distinct and different due to the pressures of natural selection Divergent Evolution Example: Darwin’s finches all evolved from a common ancestor, all finches are very distinct in beak shape and color Divergent Evolution Example: A population of fruit flies undergoes speciation due to area flooding. One population appears larger in size and is brown instead of black due to the selection pressure of their new environment. Convergent Evolution The unrelated look similar. Two unrelated species may share many features due to similarities in environment and climate. Convergent Evolution Example: Fish near Antarctic have a protein that keeps them from freezing. On the other side of the Globe at the Arctic, there are also fish who have evolved to have “anti-freeze” proteins. These two populations of fish have no relation or common ancestor, just similar selective pressures.