One famous dog and a powerful new approach for understanding biology and evolutionary history

Ever since scientists first read the complete genetic codes of creatures like fruit flies and humans more than two decades ago, the field of genomics has promised major leaps forward in understanding basic questions in biology. Two recent articles break new ground by showing how much valuable information can be found in genomes of a single species, such as endangered orcas, or even in the DNA of an individual. That individual is a sled dog named Balto, who has been immortalized in movies and a statue for helping to bring lifesaving diphtheria antitoxin to Nome, Alaska in an epic journey across the Alaskan wilderness in the winter of 1925. With just a snippet of the dog's preserved skin researchers have made great discoveries.

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