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Monday, November 23, 2009 |
Monday, November 23, 2009 |
Photo: Lizards, Birds Have Hair GenesBy comparing human, chicken, and green anole lizard genomes, scientists found that hair dates back to a 300-million-year-old common reptilian ancestor. Photograph courtesy of Karin Jaeger (Medical University of Vienna, Austria)
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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