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Sheep–goat Hybrid
A sheep–goat hybrid (called a geep in popular media or sometimes a shoat) is the offspring of a sheep and a goat. While sheep and goats are similar and can be mated, they belong to different genera in the subfamily Caprinae of the family Bovidae. Sheep belong to the genus ''Ovis'' and have 54 chromosomes, while goats belong to the genus ''Capra'' and have 60 chromosomes. The offspring of a sheep–goat pairing is generally stillborn. Despite widespread shared pasturing of goats and sheep, hybrids are very rare, demonstrating the genetic distance between the two species. They are not to be confused with sheep–goat chimera, which are artificially created by combining the embryos of a goat and a sheep. Characteristics There is a long-standing belief in sheep–goat hybrids, which is presumably due to the animals' resemblance to each other. Some primitive varieties of sheep may be misidentified as goats. In ''Darwinism – An Exposition of the Theory of Natural Selection with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Luzon
Central Luzon ( pam, (Reyun ning) Kalibudtarang Luzon, pag, (Rehiyon na) Pegley na Luzon, tgl, (Rehiyon ng) Gitnang Luzon, ilo, (Rehion/Deppaar ti) Tengnga ti Luzon), designated as Region III, is an administrative region in the Philippines, primarily serving to organize the 7 provinces of the vast central plains of the island of Luzon (the largest island), for administrative convenience. The region contains the largest plain in the country and produces most of the country's rice supply, earning itself the nickname "Rice Granary of the Philippines". Its provinces are: Aurora, Bataan, Bulacan, Nueva Ecija, Pampanga, Tarlac and Zambales. Pangasinan was formerly a province of Central Luzon before President Marcos signed ''Presidential Decree No. 1'', 1972, incorporating it into Ilocos Region. Additionally, the province of Aurora was part of the defunct political region Southern Tagalog when the region was divided into Calabarzon and Mimaropa, upon the issuance of '' E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meiosis
Meiosis (; , since it is a reductional division) is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each chromosome ( haploid). Additionally, prior to the division, genetic material from the paternal and maternal copies of each chromosome is crossed over, creating new combinations of code on each chromosome. Later on, during fertilisation, the haploid cells produced by meiosis from a male and female will fuse to create a cell with two copies of each chromosome again, the zygote. Errors in meiosis resulting in aneuploidy (an abnormal number of chromosomes) are the leading known cause of miscarriage and the most frequent genetic cause of developmental disabilities. In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells, each with half the number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domestic Sheep
Sheep or domestic sheep (''Ovis aries'') are domesticated, ruminant mammals typically kept as livestock. Although the term ''sheep'' can apply to other species in the genus '' Ovis'', in everyday usage it almost always refers to domesticated sheep. Like all ruminants, sheep are members of the order Artiodactyla, the even-toed ungulates. Numbering a little over one billion, domestic sheep are also the most numerous species of sheep. An adult female is referred to as a ''ewe'' (), an intact male as a ''ram'', occasionally a ''tup'', a castrated male as a ''wether'', and a young sheep as a ''lamb''. Sheep are most likely descended from the wild mouflon of Europe and Asia, with Iran being a geographic envelope of the domestication center. One of the earliest animals to be domesticated for agricultural purposes, sheep are raised for fleeces, meat (lamb, hogget or mutton) and milk. A sheep's wool is the most widely used animal fiber, and is usually harvested by shearing. In Comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryo
An embryo is an initial stage of development of 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 are arranged as a solid ball that when reaching a certain size, called a morula, 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 the body. Neurulation forms the ner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chimera (genetics)
A genetic chimerism or chimera ( ) is a single organism composed of cells with more than one distinct genotype. In animals, this means an individual derived from two or more zygotes, which can include possessing blood cells of different blood types, subtle variations in form ( phenotype) and, if the zygotes were of differing sexes, then even the possession of both female and male sex organs. Animal chimeras are produced by the merger of two (or more) embryos. In plant chimeras, however, the distinct types of tissue may originate from the same zygote, and the difference is often due to mutation during ordinary cell division. Normally, genetic chimerism is not visible on casual inspection; however, it has been detected in the course of proving parentage. Another way that chimerism can occur in animals is by organ transplantation, giving one individual tissues that developed from a different genome. For example, transplantation of bone marrow often determines the recipient's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allen County, Kentucky
Allen County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 20,588. Its county seat is Scottsville. The county is named for Colonel John Allen, a state senator and soldier who was killed leading the 1st Regiment of Kentucky Rifleman at the Battle of Frenchtown, Michigan during the War of 1812. Allen County practices the prohibition of alcohol and is a completely dry county. It was formed in 1815 from parts of Barren and Warren counties. Allen County is included in the Bowling Green, KY Metropolitan Statistical Area. History Allen County was established in 1815 from land given by Barren and Warren counties. A courthouse fire in 1902 resulted in the loss of some county records. Geography According to the United States Census Bureau, the county has a total area of , of which is land and (2.1%) is water. Adjacent counties * Warren County northwest * Barren County northeast * Monroe County east * Macon County, Tennessee so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Czech Republic
The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The Czech Republic has a hilly landscape that covers an area of with a mostly temperate continental and oceanic climate. The capital and largest city is Prague; other major cities and urban areas include Brno, Ostrava, Plzeň and Liberec. The Duchy of Bohemia was founded in the late 9th century under Great Moravia. It was formally recognized as an Imperial State of the Holy Roman Empire in 1002 and became a kingdom in 1198. Following the Battle of Mohács in 1526, the whole Crown of Bohemia was gradually integrated into the Habsburg monarchy. The Protestant Bohemian Revolt led to the Thirty Years' War. After the Battle of White Mountain, the Habsburgs consolidated their rule. With the dissolution of the Holy Empire in 1806, the Cro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tábor
Tábor (; german: Tabor) is a town in the South Bohemian Region of the Czech Republic. It has about 33,000 inhabitants. The town centre is well preserved and is protected by law as an urban monument reservation. Administrative parts The following villages are administrative parts of Tábor: *Čekanice *Čelkovice *Hlinice *Horky *Klokoty *Měšice *Náchod *Smyslov *Stoklasná Lhota *Větrovy *Všechov *Zahrádka *Záluží *Zárybničná Lhota Etymology Although the town's Czech name translates directly to "camp" or "encampment", these words were derived from the Tábor's name, and the town was named after the biblical Mount Tabor located in Israel. The town also gave its name to the Taborites, a radical wing of the Hussites. Tábor was initially called ''Hradiště hory Tábor'' ("fortified settlement of the Tábor mountain"). Geography Tábor lies south of the capital Prague, north of the regional capital České Budějovice. It lies on the river Lužnice. Tábor is l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballymore Eustace
Ballymore Eustace () is a small town situated in County Kildare in Ireland, although until 1836 it lay within an exclave (a detached "pocket") of County Dublin. It lies close to the border with County Wicklow. The town's name, which is frequently shortened to "Ballymore" in everyday usage, derives from the Irish ''An Baile Mór'' ("the big town") with the addition – to distinguish it from several other Ballymores in Ireland – of the family name (Fitz)Eustace. A fuller version of the town's official name in Irish is ''Baile Mór na nIústasach'' ("big town of the Eustaces"). Prior to the Norman invasion the area was known as Críoch Ua Cormaic. Location and access Ballymore Eustace is located at the junction of the R411 and R413 regional roads, on the River Liffey, over which the R411 is carried by a relatively rare seven-arch bridge. It had a population of 872 at the 2011 census. The town is served by Dublin Bus, with route number 65 running four times daily (Monday- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nantes
Nantes (, , ; Gallo: or ; ) is a city in Loire-Atlantique on the Loire, from the Atlantic coast. The city is the sixth largest in France, with a population of 314,138 in Nantes proper and a metropolitan area of nearly 1 million inhabitants (2018). With Saint-Nazaire, a seaport on the Loire estuary, Nantes forms one of the main north-western French metropolitan agglomerations. It is the administrative seat of the Loire-Atlantique department and the Pays de la Loire region, one of 18 regions of France. Nantes belongs historically and culturally to Brittany, a former duchy and province, and its omission from the modern administrative region of Brittany is controversial. Nantes was identified during classical antiquity as a port on the Loire. It was the seat of a bishopric at the end of the Roman era before it was conquered by the Bretons in 851. Although Nantes was the primary residence of the 15th-century dukes of Brittany, Rennes became the provincial capital after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin. Its eighteen integral regions (five of which are overseas) span a combined area of and contain clos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
