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Rumpless
Rumpless is a term used for the mutation which causes the tail of an animal to be absent. Usage and examples can be found in Manx cats, Manx Rumpy, Belgian d'Everberg and Araucana chickens. See also * Rump (animal) The rump or croup, in the external morphology of an animal, is the portion of the posterior dorsum – that is, posterior to the loins and anterior to the tail. Anatomically, the rump corresponds to the sacrum. The tailhead or dock is the ... Mutation Animal anatomy {{Cell-biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manx Rumpy
The Rumpless Game is a British breed of tail-less chicken. It may have originated on the Isle of Man, and may thus be known as the Manx Rumpy. There are both standard-sized and bantam Rumpless Game. History Manx Rumpy The British breed has never been imported to the United States. In 1958 some tail-less birds, supposedly of Iranian origin, were crossed with other breeds to produce an approximation of the British type, and the name "Manx Rumpy" applied to them, perhaps by analogy with the tail-less Manx cat. The Livestock Conservancy recommends that they be called "Persian Rumpless". They are not recognised by the American Poultry Association. They are good layers of brown eggs, and may also occasionally lay white, blue, or green eggs. Characteristics The Rumpless Game, like all other tail-less breeds such as the Araucana and the Barbu d'Everberg, lacks the uropygium from which the tail grows. It is a hard-feathered breed, with a single comb and small wattles and earlo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Araucana
The Araucana ( es, Gallina Mapuche, italic=no) is a breed of domestic chicken from Chile. Its name derives from the Araucanía region of Chile where it is believed to have originated. It lays blue-shelled eggs, one of very few breeds that do so. Breed standards for the Araucana vary from country to country. It may have unusual tufts of feathers on the ears, and may be rumpless, without a tail and tail-bone; in the United States it may for this reason be known as the South American Rumpless. Both ear-tufts and rumplessness are caused by lethal genes, so not all birds display these traits. The Ameraucana breed and "Easter egger" hybrids of the United States, which also lay blue or green eggs, both derive from the Araucana. History The early history of the Araucana is not documented. The birds were commonly seen in South America in the early twentieth century. The Spanish aviculturist Salvador Castelló, who visited Chile in 1914, saw them and named them "Gallina Araucana", as m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgian D'Everberg
The ( nl, Everbergse Baardkriel, italic=no), is a Belgian breed of bantam chicken. It is a tailless variant of the Barbu d'Uccle, and was bred in about 1906 at the Château d'Everberg, at Everberg in the municipality of Kortenberg, between Brussels and Leuven. It is among the most endangered chicken breeds in Belgium, and in 2010 its conservation status was classed as "critical". It is a true bantam, with no large counterpart. Cocks weigh , and hens . The Barbu d'Everberg is listed as a breed by the Entente Européenne Entente, meaning a diplomatic "understanding", may refer to a number of agreements: History * Entente (alliance), a type of treaty or military alliance where the signatories promise to consult each other or to cooperate with each other in case o .... In Britain and in the Netherlands it is considered a variant of the Barbu d'Uccle rather than a separate breed. References Bantam chicken breeds Chicken breeds originating in Belgium Chicken breeds Korten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutation
In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis, or meiosis or other types of damage to DNA (such as pyrimidine dimers caused by exposure to ultraviolet radiation), which then may undergo error-prone repair (especially microhomology-mediated end joining), cause an error during other forms of repair, or cause an error during replication (translesion synthesis). Mutations may also result from insertion or deletion of segments of DNA due to mobile genetic elements. Mutations may or may not produce detectable changes in the observable characteristics (phenotype) of an organism. Mutations play a part in both normal and abnormal biological processes including: evolution, cancer, and the development of the immune system, including junctional diversity. Mutation is the ultimate source o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manx (cat)
The Manx cat (, in earlier times often spelled Manks) is a breed of domestic cat (''Felis catus'') originating on the Isle of Man, with a naturally occurring mutation that shortens the tail. Many Manx have a small stub of a tail, but Manx cats are best known as being entirely tailless; this is the most distinguishing characteristic of the breed, along with elongated hind legs and a rounded head. Manx cats come in all coat colours and patterns, though all-white specimens are rare, and the coat range of the original stock was more limited. Long-haired variants are sometimes considered a separate breed, the Cymric. Manx are prized as skilled hunters, and thus have often been sought by farmers with rodent problems, and been a preferred ship's cat breed. They are said to be social, tame and active. An old local term for the cats on their home island is ''stubbin'' or ''rumpy''. Manx have been exhibited in cat shows since the 1800s, with the first known breed standard published in 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rump (animal)
The rump or croup, in the external morphology of an animal, is the portion of the posterior dorsum – that is, posterior to the loins and anterior to the tail. Anatomically, the rump corresponds to the sacrum. The tailhead or dock is the beginning of the tail, where the tail joins the rump. It is known also as the base or root of the tail, and corresponds to the human sacrococcygeal symphysis. In some mammals the tail may be said to consist of the tailbone (meaning the bony column, muscles, and skin) and the skirt (meaning the long hairs growing from the tailbone). In birds, similarly, the tail consists of tailbone and tailfan (tail fan). Some animals are subjected to docking, the amputation of the tailbone at or near the dock. These include dogs, cats, sheep, pigs, and horses. Humans have a remnant tail, the coccyx, and the human equivalent of docking is coccygectomy. Usage Usage varies from animal to animal. Birds and cattle are said to have a rump and tailhead ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutation
In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis, or meiosis or other types of damage to DNA (such as pyrimidine dimers caused by exposure to ultraviolet radiation), which then may undergo error-prone repair (especially microhomology-mediated end joining), cause an error during other forms of repair, or cause an error during replication (translesion synthesis). Mutations may also result from insertion or deletion of segments of DNA due to mobile genetic elements. Mutations may or may not produce detectable changes in the observable characteristics (phenotype) of an organism. Mutations play a part in both normal and abnormal biological processes including: evolution, cancer, and the development of the immune system, including junctional diversity. Mutation is the ultimate source o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
