Friday, April 6, 2007

Genes determine dogs' sizes

Scientists: Genes determine dogs' sizes (AP)

This undated handout photo provided by the journal Science shows Gibson, a Great Dane, right, and  Zoie, a Chihuahua in Grass Valley, Calif. (AP Photo/Science, Deanne Fitzmaurice)AP - From the towering Great Dane to the feisty little Chihuahua, all dogs are brothers under the skin. Now, researchers have uncovered a reason why the animals wearing that skin vary so much in size.


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