|
Panda German Shepherds
Panda German Shepherds are German Shepherd dogs that exhibit a rare genetic mutation that causes white spotting in the traditionally non-white marked breed. Genetics The first ever recorded Panda mutation occurred spontaneously in a female dog, Lewcinka's Franka von Phenom, in 2000. A study published by UCDavis in 2016 found that the Panda marking is the result of dominant mutation of the KIT gene, or the CD117 gene. DNA tested conducted by the American Kennel Club proved her lineage to be, for a fact, a pure German Shepherd Dog. Panda is a dominant gene. In its homozygous state, the mutation is considered embryonic lethal as no live dog has been observed with it. Controversy Due to fact that any white markings is considered a fault for showing, many German Shepherd fanciers assume that this color as a result of crossbreeding to Collie Collies form a distinctive type of herding dogs, including many related landraces and standardized breeds. The type originated in Scotl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Shepherd
The German Shepherd or Alsatian is a German breed of working dog of medium to large size. The breed was developed by Max von Stephanitz using various traditional German herding dogs from 1899. It was originally bred as a herding dog, for herding sheep. It has since been used in many other types of work, including disability assistance, search-and-rescue, police work, and warfare. It is commonly kept as a companion dog, and according to the Fédération Cynologique Internationale had the second-highest number of annual registrations in 2013. History During the 1890s, attempts were being made to standardise dog breeds. Dogs were being bred to preserve traits that assisted in their job of herding sheep and protecting their flocks from predators. In Germany this was practised within local communities, where shepherds selected and bred dogs. It was recognised that the breed had the necessary skills for herding sheep, such as intelligence, speed, strength and keen senses o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominance (genetics)
In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. The first variant is termed dominant and the second recessive. This state of having two different variants of the same gene on each chromosome is originally caused by a mutation in one of the genes, either new (''de novo'') or inherited. The terms autosomal dominant or autosomal recessive are used to describe gene variants on non-sex chromosomes ( autosomes) and their associated traits, while those on sex chromosomes (allosomes) are termed X-linked dominant, X-linked recessive or Y-linked; these have an inheritance and presentation pattern that depends on the sex of both the parent and the child (see Sex linkage). Since there is only one copy of the Y chromosome, Y-linked traits cannot be dominant or recessive. Additionally, there are other forms of dominance such as incomplete d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collie
Collies form a distinctive type of herding dogs, including many related landraces and standardized breeds. The type originated in Scotland and Northern England. Collies are medium-sized, fairly lightly-built dogs, with pointed snouts. Many types have a distinctive white color over the shoulders. Collies are very active and agile, and most types of collies have a very strong herding instinct. Collie breeds have spread through many parts of the world (especially Australia and North America), and have diversified into many varieties, sometimes mixed with other dog types. Some collie breeds have remained as working dogs for herding cattle, sheep, and other livestock, while others are kept as pets, show dogs or for dog sports, in which they display great agility, stamina and trainability. While the American Kennel Club has a breed they call "collie", in fact ''collie dogs'' are a distinctive type of herding dog inclusive of many related landraces and formal breeds. There are usua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
