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Alaskan husky. Crossbreeding has played a key characteristic in the development of sled dogs with various crossbreeds developing to meet the specific needs of the era and geographical region, including the Mackenzie River husky, in which European breeds were crossed with Native American dogs to produce a powerful and hardy freighting dog in the 19th century, and the Alaskan husky, bred ...
An African hairless dog at the Walter Rothschild Zoological Museum, Tring, England The Chinese Crested Dog's coated variety is called a "Powderpuff" and is a recognized type. A hairless dog is a dog with a genetic disposition for hairlessness and hair loss. There are two known types of genetic hairlessness, a dominant and a recessive type.
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 [2] but only a handful affect the physical variations in their coats. Most genes come in pairs, one ...
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 dominant black allele at CBD103 will produce a black coat color in dogs possessing wild-type alleles at MC1R and Agouti. [8]
The dominant female produces all or almost all of the offspring in the living group, and the dominant male has first access to her during her oestrus period. In red deer, the males who experienced winter dominance, resulting from greater access to preferred foraging sites, had higher ability to get and maintain larger harems during the mating ...
This list of dog breeds includes both extant and extinct dog breeds, varieties and types. A research article on dog genomics published in Science/AAAS defines modern dog breeds as "a recent invention defined by conformation to a physical ideal and purity of lineage". [1] According to BigThink, over 40% of the world's dog breeds come from the ...
A powerful and protective dog who craves human companionship, the bullmastiff is a gentle giant who can be quite the cuddle bug! Docile and sweet with those they love, this breed has outstanding ...
A mongrel, mixed-breed dog or mutt is a dog that does not belong to one officially recognized breed but can be a mix of two breeds and is not the result of intentional breeding. [ 59 ] In the United States, the term mixed-breed is a favored synonym over mongrel among individuals who wish to avoid negative connotations associated with the latter ...
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