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Merle (dog coat) Merle is a genetic pattern in a dog 's coat and alleles of the PMEL gene. It results in different colors and patterns and can affect any coats. The allele creates mottled patches of color in a solid or piebald coat, blue or odd-colored eyes, and can affect skin pigment as well. Two types of colored patches generally appear in a ...
Dog coat genetics. Dogs display wide variation in coat type, density, length, color, and composition. Dogs have a wide range of coat colors, patterns, textures and lengths. [1] Dog coat color is governed by how genes are passed from dogs to their puppies and how those genes are expressed in each dog. Dogs have about 19,000 genes in their genome ...
According to Candille, et al. (2007), dog coat color can largely be explained by three genes: MC1R, Agouti and CBD103. When a dog has wild-type alleles at all three genes, it will have a yellow coat. When the dog has a loss-of-function allele at MC1R, it will have a yellow coat regardless of the genes it carries on the other two genes. Only a ...
The coat of the domestic dog refers to the hair that covers its body. Dogs demonstrate a wide range of coat colors, patterns, textures, and lengths. As with other mammals, a dog's fur has many uses, including thermoregulation and protection from cuts or scratches; furthermore, a dog's coat plays an important role in the showing of purebred dogs.
The American Kennel Club says breeding two merle-coated dogs could negatively affect pigment cells which are responsible for coat and eye color—and nerve development. There’s a higher chance a ...
The Rough Collie (also known as the Long-Haired Collie) is a long-coated dog breed of medium to large size that, in its original form, was a type of collie used and bred for herding sheep in Scotland. More recent breeding has focused on the Collie as a show dog, and also companion. The breed specifications call for a distinctive long narrow ...
Breed characteristics. The Miniature American Shepherd is a small dog, with the breed standard specifying a height of 14-18 inches (36–46 cm) for males and 13-17 inches (33–43 cm) for females. [1] The topline is level from withers to hip joint. The tail may be undocked, a natural bobtail, or may be docked to a length not exceeding three inches.
Three Australian Shepherds. The Australian Shepherd descends in part from pastoral dogs brought to herd Spanish flocks in North America as early as the 1500s. [1] There is some speculation that these dogs included the Carea Leonés, a mountain sheepdog that can display the eye color and merle coat found in many contemporary Australian Shepherds. [1]