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Labrador puppies of all colors can potentially occur in the same litter. Color is determined primarily by two genes. The first gene (the B locus) determines the density of the coat's pigment granules: dense granules result in a black coat, sparse ones give a chocolate coat.
The second (E) locus determines whether the pigment is produced at all. A dog with the recessive e allele will produce little pigment and will be yellow regardless of its genotype at the B locus.
Variations in numerous other genes control the subtler details of the coat's coloration, which in yellow Labs varies from white to light gold to a fox red. Chocolate and black Labs' noses will match the coat color. More »
WhitePaw
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Puppy Group - Desktop Nexus AnimalsDownload free wallpapers and background images: Puppy Group. Desktop Nexus Animals background ID 291287. Labrador puppies of all colors can potentially occur in the same litter. Color is determined primarily by two genes. The first gene (the B locus) determines the density of the coat's pigment granules: dense granules result in a black coat, sparse ones give a chocolate coat.
The second (E) locus determines whether the pigment is produced at all. A dog with the recessive e allele will produce little pigment and will be yellow regardless of its genotype at the B locus.
Variations in numerous other genes control the subtler details of the coat's coloration, which in yellow Labs varies from white to light gold to a fox red. Chocolate and black Labs' noses will match the coat color. More »
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Uploaded By: WhitePaw
Date Uploaded: February 23, 2010
Filename: puppy-labs.jpg
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File Size: 2.58MB
Category: Dogs