Doggie DNA.

• Position: Science

Researchers have pieced together a draft of the dog genome, the sequence of DNA units that includes air the genetic instructions for making a dog. The draft, by the Center for the Advancement of Genomics, in Rockville, Md., is based on the DNA of a male standard poodle named Shadow. The sequence is very rough, with millions of gaps in the 2.6,-billion-unit genome. But it is enough to draw certain conclusions about the nature of dogginess. The dog genome interests researchers because dogs and people get many of...