Equine evolution sets new DNA record

natgeo700,000-year-old horse genome is the oldest known DNA sequence, beating the previous record of 80,000 years by tens of millenia! This study, reported in the journal Nature, rewrites the evolutionary history of the horse and redefines how far back in time scientists can travel using DNA sequences as their guide. http://news.nationalgeographic.com/news/2013/06/130626-ancient-dna-oldest-sequenced-horse-paleontology-science/

photograph by Michael Nichols, National Geographic

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