DNA from museum samples of extinct animals is providing unexpected information on the extent and effect of the Ice Age as well as the path of species evolution, according to a report by scientists from Yale University, the Smithsonian Institute and the Max Planck Institute for Evolutionary Anthropology.
Current living zebras (top row), extinct quaggas (bottom row)
The quagga, Equus quagga, a South African relative of horses and zebras, having a front half with zebra-like stripes and a back section like a horse with no marking, became extinct about 100 years ago. The pelt from a quagga museum specimen was the subject of tissue sampling that launched the field of ancient DNA analysis.
"Twenty years ago this exact species opened the field of ancient DNA studies on extinct animals," said one of the authors, Gisella Caccone, senior research scientist in the Department of Ecology and Evolutionary Biology at Yale. "Now, thanks to technological advances in the field, we revisited the story and used a population level approach to this question by analyzing a larger fragment of DNA and multiple specimens."
Janet Rettig Emanuel | EurekAlert!
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