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Creeper Chickens
Creeper chickens are characterised by abnormally short legs, so short that the body is carried a few centimetres from the ground. This chondrodystrophy (dwarfism) is caused by a Lethal allele#Dominant lethals, dominant lethal allele, ''Cp''. A number of breeds display the characteristic, among them the Chabo and Jitokku breeds of Japan, the Courte-pattes of France, the Krüper of Germany, the Luttehøns of Denmark, and the Scots Dumpy. They have been called by many names, among them bakies, brevicrews, corlaighs, crawlers, creepers, creepies, dumpfries, dumpies and jumpers. History Creeper chickens have been known and described since Renaissance times at least. Chickens of this type were described and illustrated in the ''Monstrorum Historia'' of the Bologna, Bolognese naturalist Ulisse Aldrovandi (1522–1605), published posthumously in 1642 with text by Bartolomeo Ambrosini. In his ''The Variation of Animals and Plants Under Domestication'' of 1868, Charles Darwin writes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krüper Hahn Gesperbert
The Krüper () is a German list of chicken breeds, breed of Creeper chickens, creeper chicken. It originates in the former Duchy of Berg, now the Bergisches Land in western Germany, and is one of three chicken breeds from that area, the others being the Bergische Kräher and the Bergische Schlotterkamm. It belongs to the group of original European creeper breeds. The breed has normal-sized and Bantam (poultry), bantam varieties. History Creeper chickens have been known and described since Renaissance times at least. An early description is in the ''De avium natura'' of the Swiss naturalist Conrad Gessner of 1555. Chickens of this type were described and illustrated in the ''Monstrorum Historia'' of the Bologna, Bolognese naturalist Ulisse Aldrovandi (1522–1605), published posthumously in 1642 with text by Bartolomeo Ambrosini. In his ''The Variation of Animals and Plants Under Domestication'' of 1868, Charles Darwin writes that creeper chickens were among the types described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ira Eugene Cutler
Ira or IRA may refer to: *Ira (name), a Hebrew, Sanskrit, Russian or Finnish language personal name * Ira (surname), a rare Estonian family name; occurs in some other languages *Iran, UNDP code IRA Law and finance * Indian Reorganization Act of 1934, US, on status of Native Americans *Individual retirement account (or individual retirement arrangement), in the US, giving tax benefits * Inflation Reduction Act of 2022, a US budget reconciliation bill *Internal Revenue Allotment, a local share of Philippines government revenue Music * Ira (Polish band), a Polish heavy metal band *Ira!, a Brazilian rock band * I.R.A. (band), a Colombian punk band *One part of an Andean wind instrument, the siku Organizations * Indian Rationalist Association * Indian Rights Association, US, for Native Americans * Initiative for the Resurgence of the Abolitionist Movement (IRA), a Mauritania anti-slavery group * Instituto Riva-Agüero, in Peru * Insurance Regulatory Authority (Kenya), the author ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creeper Chickens
Creeper chickens are characterised by abnormally short legs, so short that the body is carried a few centimetres from the ground. This chondrodystrophy (dwarfism) is caused by a Lethal allele#Dominant lethals, dominant lethal allele, ''Cp''. A number of breeds display the characteristic, among them the Chabo and Jitokku breeds of Japan, the Courte-pattes of France, the Krüper of Germany, the Luttehøns of Denmark, and the Scots Dumpy. They have been called by many names, among them bakies, brevicrews, corlaighs, crawlers, creepers, creepies, dumpfries, dumpies and jumpers. History Creeper chickens have been known and described since Renaissance times at least. Chickens of this type were described and illustrated in the ''Monstrorum Historia'' of the Bologna, Bolognese naturalist Ulisse Aldrovandi (1522–1605), published posthumously in 1642 with text by Bartolomeo Ambrosini. In his ''The Variation of Animals and Plants Under Domestication'' of 1868, Charles Darwin writes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Game (poultry)
The Indian Game is a British breed of game chicken, now reared either for meat or show. It originated in the early nineteenth century in the counties of Cornwall and Devon in south-west England. It is a heavy, muscular bird with an unusually broad breast; the eggs are light brown. In the United States the name was changed in the early twentieth century to Cornish. A white variant, the White Cornish, was developed there at about the same time, and is much used in modern industrial chicken meat production in many parts of the world, either for cross-breeding to produce hybrid broilers, or to produce fast-growing " game hens". History The breed was developed by Sir Walter Gilbert, of Bodmin in Cornwall, in about 1820. It was intended to be a gamecock, but had no aptitude for cockfighting. It is recognised as "Indian Game" in Australia, by the Poultry Club of Great Britain in the United Kingdom, and by the Entente Européenne in Europe. In the United States the name wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comb (anatomy)
A comb is a fleshy growth or crest on the top of the head of some Galliformes, gallinaceous birds, such as domestic chickens. The alternative name cockscomb (with several #Spelling variations, spelling variations) reflects the fact that combs are generally larger on cock birds than on hens. The comb is one of several fleshy protuberances on the heads of chickens, the others being the Wattle (anatomy), wattles and earlobes, which collectively are called Caruncle (bird anatomy), caruncles. In turkeys, the caruncles are the fleshy nodules on the head and throat. Chicken combs are most commonly red, but may also be black or dark purple in breeds such as the Silkie or the Sebright. In other species the color may vary from light grey to deep blue or red. The comb may be a reliable indicator of health or vigor and is used for mate-assessment in some poultry species. Types of chicken comb Comb shape varies considerably depending on the breed or species of bird. Of the many types and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryo
An embryo ( ) is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells known as blastomeres. The blastomeres (4-cell stage) are arranged as a solid ball that when reaching a certain size, called a morula, (16-cell stage) takes in fluid to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals. The mammalian blastocyst hatches before implantating into the endometrial lining of the womb. Once implanted the embryo will continue its development through the next stages of gastrulation, neurulation, and organogenesis. Gastrulation is the formation of the three germ layers that will form all of the different parts of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homozygotes
Zygosity (the noun, zygote, is from the Greek "yoked," from "yoke") () is the degree to which both copies of a chromosome or gene have the same genetic sequence. In other words, it is the degree of similarity of the alleles in an organism. Most eukaryotes have two matching sets of chromosomes; that is, they are diploid. Diploid organisms have the same loci on each of their two sets of homologous chromosomes except that the sequences at these loci may differ between the two chromosomes in a matching pair and that a few chromosomes may be mismatched as part of a chromosomal sex-determination system. If both alleles of a diploid organism are the same, the organism is homozygous at that locus. If they are different, the organism is heterozygous at that locus. If one allele is missing, it is hemizygous, and, if both alleles are missing, it is nullizygous. The DNA sequence of a gene often varies from one individual to another. These gene variants are called alleles. While some ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lethal Allele
Lethal alleles (also referred to as lethal or lethals) are alleles that cause the death of the organism that carries them. They are usually a result of mutations in genes that are essential for growth or development. Lethal alleles can be recessive, dominant, conditional, perinatal, or postnatal after an extended period of apparently normal development depending on the gene or genes involved. Lethal alleles may specifically refer to embryonically lethal alleles, in which the fetus will never survive to term. Such alleles are a cause of non- Mendelian patterns of inheritance, such as the observation of traits in a 2:1 ratio. History Lethal alleles were first discovered by Lucien Cuénot in 1905 while studying the inheritance of coat colour in mice. The ''agouti'' gene in mice is largely responsible for determining coat colour. The wild-type allele produces a blend of yellow and black pigmentation in each hair of the mouse. This yellow and black blend may be referred to as 'ago ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autosomal Dominant
In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the Phenotype, effect of a different variant of the same gene on Homologous chromosome, the other copy of the chromosome. The first variant is termed dominant and the second is called recessive. This state of having Heterozygosity, 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 Heredity, 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 Y chromosome, Y-linked traits cannot be dominant or recessive. Additionally, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
