Sometimes, two related species are separated from each other and evolve in different locations, but still develop many of the same characteristics. This is known as parallel evolution.
Parallel evolution probably occurs because similar environmental pressures actually lead to different species evolving similar traits. An example is wildebeests, which are native to the arid, flat grasslands of the African savanna, and North American cattle. The cattle are native to the arid, flat grasslands of the North American plains. These species evolved far from each other but show a striking morphological similarity because both were influenced by such similar environments.
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