Okapi (IMAGE)
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The okapi's gene sequences are very similar to the giraffe's because the okapi and the giraffe diverged from a common ancestor only 11-to-12 million years ago -- relatively recently on an evolution timescale. In spite of this close relationship, the okapi looks more like a zebra and it lacks the giraffe's imposing height and impressive cardiovascular capabilities. For these two reasons, the genome sequence of the okapi provides a powerful screen that a research team led by Douglas R. Cavener of Penn State University and Morris Agaba of Nelson Mandela African Institute for Science and Technology has used to identify some of the giraffe's unique genetic changes.
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