In a study examining the DNA of over 6,000 dogs, researchers at Embark Veterinary, Inc., Boston, Massachusetts, have identified that duplication of a part of canine chromosome 18 is strongly associated with blue eyes in Siberian Huskies. Blue eyes are iconic of the Siberian Husky, a breed of northern latitudes. Image credit: Susanne Koplin. Although two genetic variants are known to underlie blue eye color in some dogs, these do not explain the trait...
