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Grullo
Grullo (pronounced GREW-yo) or grulla is a color of horses in the dun family, characterized by tan-gray or mouse-colored hairs on the body, often with shoulder and dorsal stripes and black barring on the lower legs. The genotype for grulla horses is a black base with dun dilution. In this coloration, each individual hair is mouse-colored, unlike a roan, which is composed of a mixture of dark and light hairs. The several shades of grulla are informally referred to with a variety of terms, including black dun, blue dun, slate grulla, silver grulla or light grulla, silver dun, or lobo dun. Silver grulla may also refer to a grulla horse with silver dapple, regardless of shade. In terms of equine coat color genetics, all of these shades are based on the dun gene acting as a dilution gene over the black gene. Because the grulla color is not due to the gray gene, a grulla horse remains the same basic color from birth, though some minor shade variation may occur from summer to winte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dun (color)
The dun gene is a dilution gene that affects both red and black pigments in the coat color of a horse. The dun gene lightens most of the body while leaving the mane, tail, legs, and primitive markings the shade of the undiluted base coat color. A dun horse always has a dark dorsal stripe down the middle of its back, usually has a darker face and legs, and may have transverse striping across the shoulders or horizontal striping on the back of the forelegs. Body color depends on the underlying coat color genetics. A classic "bay dun" is a gray-gold or tan, characterized by a body color ranging from sandy yellow to reddish brown. Duns with a chestnut base may appear a light tan shade, and those with black base coloration are a smoky gray. Manes, tails, primitive markings, and other dark areas are usually the shade of the undiluted base coat color. The dun gene may interact with all other coat color alleles. Taxonomic distribution Dun is believed to be the ancestral or wild type c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roan (horse)
Roan is a horse coat color pattern characterized by an even mixture of colored and white hairs on the body, while the head and "point coloration, points"—lower legs, Mane (horse), mane, and tail—are mostly solid-colored. Horses with roan coats have white hairs evenly intermingled throughout any other color. The head, legs, mane, and tail have fewer scattered white hairs or none at all. The roan pattern is Dominance (genetics), dominantly inherited, and is found in many horse breeds. While the specific mutation responsible for roan has not been exactly identified, a DNA test can determine zygosity for roan in several breeds. True roan is always present at birth, though it may be hard to see until after the foal coat sheds out. The coat may lighten or darken from winter to summer, but unlike the Gray (horse), gray coat color, which also begins with intermixed white and colored hairs, roans do not become progressively lighter in color as they age. The silvering effect of mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dun Gene
The dun gene is a dilution gene that affects both red and black pigments in the equine coat color, coat color of a horse. The dun gene lightens most of the body while leaving the mane (horse), mane, tail, legs, and primitive markings the shade of the undiluted base coat color. A dun horse always has a dark dorsal stripe down the middle of its back, usually has a darker face and legs, and may have transverse striping across the shoulders or horizontal striping on the back of the forelegs. Body color depends on the underlying equine coat color genetics, coat color genetics. A classic "bay dun" is a gray-gold or tan, characterized by a body color ranging from sandy yellow to reddish brown. Duns with a chestnut (horse color), chestnut base may appear a light tan shade, and those with black horse, black base coloration are a smoky gray. Manes, tails, primitive markings, and other dark areas are usually the shade of the undiluted base coat color. The dun gene may interact with all other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equine Coat Color Genetics
Equine coat color genetics determine a horse's coat color. Many colors are possible, but all variations are produced by changes in only a few genes. bay horse, Bay is the most common color of horse, followed by black and chestnut. A change at the ''agouti'' locus is capable of turning bay to black horse, black, while a mutation at the ''extension'' locus can turn bay or black to chestnut horse, chestnut. These three "base" colors can be affected by any number of dilution genes and patterning genes. The dilution genes include the wildtype dun gene, believed to be one of the oldest colors extant in horses and donkeys. The dun gene lightens some areas of the horse's coat, while leaving a darker dorsal stripe, mane, tail, face, and legs. Depending on whether it acts on a bay, black, or chestnut base coat, the dun gene produces the colors known as bay dun, grullo, and red dun. Another common dilution gene is the cream gene, responsible for palomino, buckskin, and cremello horses. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spanish Language In The Americas
The different dialects of the Spanish language spoken in the Americas are distinct from each other, as well as from those varieties spoken in the Iberian Peninsula and the Spanish Mediterranean islands—collectively known as Peninsular Spanish—and Spanish spoken elsewhere, such as in Equatorial Guinea, Western Sahara, or in the Philippines. There is great diversity among the various Hispanic American vernaculars, as there are no common traits shared by all of them which are not also in existence in one or more of the variants of Iberian Spanish. A general Hispanic American "standard" does, however, vary from the Castilian "standard" register used in television, music and, notably, in the dubbing industry. Of the more than 498 million people who speak Spanish as their native language, more than 455 million are in Latin America, the United States and Canada, as of 2022. The total amount of native and non-native speakers of Spanish as of October 2022 well-exceeds 595 million. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Konik
The Konik or Polish Konik, , is a Polish list of horse breeds, breed of small horse or pony. There are semi-feral populations in some regions. They are usually dun gene, mouse dun or primitive markings, striped dun. The Bilgoray, , of south-eastern Poland is a sub-type of the breed influenced by Arab horse, Arab and Thoroughbred blood; it is close to extinction. The extinct Sweyki or Schweike sub-type of East Prussia contributed to the development of the Trakehner. The word "konik" means 'small horse'. It may be used in a wider sense to describe the Polish Konik and other similar breeds, among them the Hucul pony of the Carpathian Mountains, the Polesian (horse), Polesian of Belarus and the Žemaitukas of Lithuania. Etymology The Polish word ''konik'' (plural ''koniki'') is the diminutive of ''koń'', the Polish word for "horse" (sometimes confused with ''kuc, kucyk'' meaning "pony"). It means 'small horse'. History The Konik is a Polish horse breed descending from v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heck Horse
The Heck horse is a horse breed that is claimed to resemble the tarpan (''Equus ferus ferus''), an extinct wild equine. The breed was created by the German zoologist brothers Heinz Heck and Lutz Heck in an attempt to breed back the tarpan. Although unsuccessful at creating a genetic copy of the extinct species, they developed a look-alike breed with grullo coloration and primitive markings. Heck horses were subsequently exported to the United States, where a breed association was created in the 1960s. Breed characteristics Heck horses are dun or grullo (a dun variant) in color, with occasional white markings. The breed has primitive markings, including a dorsal stripe and horizontal striping on the legs. However, they lack the erect manes of primitive equines including tarpans. Heck horses generally stand between tall. The head is large, the withers low, and the legs and hindquarters strong. The hooves are strong, often not needing shoeing. The gait of the Heck horse is h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breeding Back
Breeding back is a form of artificial selection by the deliberate selective breeding of domestication, domestic (but not exclusively) animals, in an attempt to achieve an animal breed with a phenotype that resembles a wild type ancestor, usually one that has gone extinct. Breeding back is not to be confused with dedomestication. Though bred-back breeds may be very similar to the extinct wild type in phenotype, ecological niche, and to some extent genetics, the gene pool of that wild type was different prior to its extinction. Even the superficial authenticity of a bred-back animal depends on the particular stock used to breed the new lineage. As a result of this, some breeds, like Heck cattle, are at best a vague look-alike of the extinct wild type aurochs, according to the literature.Cis van Vuure: Retracing the Aurochs – History, Morphology and Ecology of an extinct wild Ox. 2005. Background The aim of breeding back programs is to restore the wild traits which may have b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feral Horse
A feral horse is a free-roaming horse of domesticated stock. As such, a feral horse is not a wild animal in the sense of an animal without domesticated ancestors. However, some populations of feral horses are managed as wildlife, and these horses often are popularly called "wild" horses. Feral horses are descended from domestic horses that strayed, escaped, or were deliberately released into the wild and remained to survive and reproduce there. Away from humans, over time, these animals' patterns of behavior revert to behavior more closely resembling that of wild horses. Some horses that live in a feral state but may be occasionally handled or managed by humans, particularly if privately owned, are referred to as " semi-feral". Feral horses live in groups called a ''herd'', ''band'', ''harem'', or ''mob''. Feral horse herds, like those of wild horses, are usually made up of small harems led by a dominant mare, containing additional mares, their foals, and immature horse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wild Horse
The wild horse (''Equus ferus'') is a species of the genus Equus (genus), ''Equus'', which includes as subspecies the modern domestication of the horse, domesticated horse (''Equus ferus caballus'') as well as the Endangered species, endangered Przewalski's horse (''Equus ferus przewalskii'', sometimes treated as a separate species i.e. ''Equus przewalskii''). The European wild horse, also known as the tarpan, that went extinct in the late 19th or early 20th century has previously been treated as the nominate subspecies of wild horse, ''Equus ferus ferus'', but more recent studies have cast doubt on whether tarpans were truly wild or if they actually were feral horses or hybrids.Tadeusz Jezierski, Zbigniew Jaworski: ''Das Polnische Konik. Die Neue Brehm-Bücherei Bd. 658'', Westarp Wissenschaften, Hohenwarsleben 2008, Other subspecies of ''Equus ferus'' may have existed and could have been the stock from which domesticated horses are descended. Przewalski's horse had reached t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinction
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and recover. As a species' potential Range (biology), range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxon, Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the Fossil, fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include Dinosaur, non-avian dinosaurs, Machairodontinae, saber-toothed cats, and mammoths. Through evolution, species arise through the process of specia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
