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Caption: This shows Ph.D. student Anthony Signore entering the ancient DNA extraction room. The scientists determined the sequence of the oxygen-storing muscle protein myoglobin from ancient DNA of the extinct woolly mammoth and Steller's sea cow in order to infer the evolution of an aquatic phase in the ancestry of modern elephants. This image relates to a paper that appeared in the June 14, 2013, issue of Science, published by AAAS. The paper, by Scott Mirceta at University of Liverpool in Liverpool, UK, and colleagues was titled, "Evolution of Mammalian Diving Capacity Traced by Myoglobin Net Surface Charge."
Credit: [Image courtesy of Anthony Signore]
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