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William Lawrence Tower
William Lawrence Tower ( 22 December 1872– July 1967) was an American zoologist, born in Halifax, Massachusetts. He was educated at the Lawrence Scientific School (Harvard), the Harvard Graduate School, and the University of Chicago ( B. S., 1902), where he taught thereafter, becoming associate professor in 1911. Research Tower was notable for his experimental work in heredity, investigating the inheritance of acquired characteristics and the laws of heredity in beetles and publishin''An Investigation of Evolution in Chrysomelid Beetles of the Genus Leptinotarsa''(1906). This study is probably the first (albeit possibly discredited) of mutation in animals. He published also ''The Development of the Colors and Color Patterns of Coleoptera'' (1903) and, with Coulter, Castle, Davenport and East, an essay on ''Heredity and Eugenics'' (1912). Tower was caught up in personal and professional scandals. He resigned from the University of Chicago in 1917 following a very public ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
22 December
Events Pre-1600 *AD 69 – Vespasian is proclaimed Emperor of Rome; his predecessor, Vitellius, attempts to abdicate but is captured and killed at the Gemonian stairs. * 401 – Pope Innocent I is elected, the only pope to succeed his father in the office. * 856 – Damghan earthquake: An earthquake near the Persian city of Damghan kills an estimated 200,000 people, the sixth deadliest earthquake in recorded history. * 880 – Luoyang, eastern capital of the Tang dynasty, is captured by rebel leader Huang Chao during the reign of Emperor Xizong. *1135 – Three weeks after the death of King Henry I of England, Stephen of Blois claims the throne and is privately crowned King of England, beginning the English Anarchy. *1216 – Pope Honorius III approves the Dominican Order through the papal bull of confirmation Religiosam vitam. *1489 – The forces of the Catholic Monarchs, Ferdinand and Isabella, take control of Almería from the Nasrid ruler of ... [...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] |
Greenhouse
A greenhouse (also called a glasshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of Transparent ceramics, transparent material, such as glass, in which plants requiring regulated climatic conditions are grown.These structures range in size from small sheds to industrial-sized buildings. A miniature greenhouse is known as a cold frame. The interior of a greenhouse exposed to sunlight becomes significantly warmer than the external temperature, protecting its contents in cold weather. Many commercial glass greenhouses or hothouses are high tech production facilities for vegetables, flowers or fruits. The glass greenhouses are filled with equipment including screening installations, heating, cooling, and lighting, and may be controlled by a computer to optimize conditions for plant growth. Different techniques are then used to manage growing conditions, including air temperature, relative humidity and vapour-pressure deficit, in ord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Journal Of Plant Sciences
The ''International Journal of Plant Sciences'' covers botanical research including genetics and genomics, developmental and cell biology, biochemistry and physiology, morphology and structure, systematics, plant-microbe interactions, paleobotany, evolution, and ecology. The journal also regularly publishes important symposium proceedings. It is published by the University of Chicago Press. From 1875 to 1876 it was known as the ''Botanical Bulletin'' and from 1876 to 1991 as the ''Botanical Gazette''. The first issue titled ''The International Journal of Plants Sciences'' was dated March 1992 (volume 53, number 1). For the years 1992 and 1993, the journal was published quarterly. The journal was founded by brothers John Merle Coulter and Stanley Coulter. John brought the journal to the University of Chicago when he started the Department of Botany. References External links * * International Journal of Plant Sciencesat SCImago Journal Rank Botanical Gazette / International Jo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Chandler Cowles
Henry Chandler Cowles (February 27, 1869 – September 12, 1939) was an American botanist and ecological pioneer (see History of ecology). A professor at the University of Chicago, he studied ecological succession in the Indiana Dunes of Northwest Indiana.Smith, S. & Mark, S. (2009)The Historical Roots of the Nature Conservancy in the Northwest Indiana/Chicagoland Region: From Science to Preservation. The South Shore Journal, 3. This led to efforts to preserve the Indiana Dunes. One of Cowles' students, O. D. Frank continued his research. Life and work Born in Kensington, Connecticut, Cowles attended Oberlin College in Ohio. He studied at the University of Chicago with the plant taxonomist John M. Coulter and the geologist Thomas Chrowder Chamberlin as main teachers. He obtained his PhD in 1898 for his study of vegetation succession on the Lake Michigan sand dunes. The inspiration to these studies came from reading ''Plantesamfund'' by the Danish botanist and pioneer ecologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Will Provine
William Ball Provine (February 19, 1942 – September 1, 2015) was an American historian of science and of evolutionary biology and population genetics. He was the Andrew H. and James S. Tisch Distinguished University Professor at Cornell University and was a professor in the Departments of History, Science and Technology Studies, and Ecology and Evolutionary Biology. Biography Provine was born in Tennessee. He held a B.S. in Mathematics (1962), and an M.A. (1965) and Ph.D (1970) in History of Science from the University of Chicago. He joined the Cornell faculty in 1969. He suffered seizures in 1995 due to a brain tumour. Provine died on September 1, 2015, due to complications from the tumor. History of theoretical population genetics Provine's Ph.D. thesis, later published as a book, documented the early origins of theoretical population genetics in the conflicts between the biostatistics and Mendelian schools of thought. He documented later developments in theoretical populat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Mayr
Ernst Walter Mayr (; 5 July 1904 – 3 February 2005) was one of the 20th century's leading evolutionary biologists. He was also a renowned Taxonomy (biology), taxonomist, tropical explorer, ornithologist, Philosophy of biology, philosopher of biology, and History of science, historian of science. His work contributed to the conceptual revolution that led to the Modern synthesis (20th century), modern evolutionary synthesis of Gregor Mendel, Mendelian genetics, systematics, and Charles Darwin, Darwinian evolution, and to the development of the Species, biological species concept. Although Charles Darwin and others posited that multiple species could evolve from a single common ancestor, the mechanism by which this occurred was not understood, creating the ''species problem''. Ernst Mayr approached the problem with a new definition for species. In his book ''Systematics and the Origin of Species'' (1942) he wrote that a species is not just a group of Morphology (biology), morph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodore Dru Alison Cockerell
Theodore Dru Alison Cockerell (1866–1948) was an American zoology, zoologist, born at Norwood, England, and brother of Sydney Cockerell. He was educated at the Middlesex Hospital Medical School, and then studied botany in the field in Colorado in 1887–90. Subsequently, he became a taxonomist and published numerous papers on the Hymenoptera, Hemiptera, Mollusca and plants, as well as publications on paleontology and evolution. Personal life Cockerell was born in Norwood, Greater London and died in San Diego, California. He married Annie Sarah Fenn in 1891 (she died in 1893) and Wilmatte Porter Cockerell, Wilmatte Porter in 1900. In 1901, he named the ultramarine blue chromodorid ''Mexichromis porterae'' (now ''Felimare porterae'') in her honor. After their marriage in 1900, they frequently went on collecting expeditions together and assembled a large private library of natural history films, which they showed to schoolchildren and public audiences to promote the cause of en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Bateson
William Bateson (8 August 1861 – 8 February 1926) was an English biologist who was the first person to use the term genetics to describe the study of heredity, and the chief populariser of the ideas of Gregor Mendel following their rediscovery in 1900 by Hugo de Vries and Carl Correns. His 1894 book ''Materials for the Study of Variation'' was one of the earliest formulations of the new approach to genetics. Early life and education Bateson was born 1861 in Whitby on the Yorkshire coast, the son of William Henry Bateson, Master of St John's College, Cambridge. He was educated at Rugby School and at St John's College, where he graduated BA in 1883 with a first in natural sciences. Taking up embryology, he went to the United States to investigate the development of ''Balanoglossus'', a worm-like hemichordate which led to his interest in vertebrate origins. In 1883–4 he worked in the laboratory of William Keith Brooks, at the Chesapeake Zoölogical Laboratory in Hampton, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warder Clyde Allee
Warder Clyde Allee (June 5, 1885 – March 18, 1955) was an American ecologist. He is recognized to be one of the great pioneers of American ecology. Schmidt, Karl Patterson. "Warder Allee: A Biographical Memoir", National Academy of Sciences. Washington D.C., 27 1957. Retrieved on 2014-03-20. As an accomplished zoologist and ecologist, Allee was best known and recognized for his research on social behavior, aggregations and distributions of animals in aquatic as well as terrestrial environments.The Editors of Encyclopædia Britannica"Warder Clyde Allee" Encyclopædia Britannica. 2010. Retrieved on 2014-03-20. Allee attended Earlham College and upon his graduation in 1908, pursued advanced studies at the University of Chicago where he received his PhD and graduated summa cum laude in 1912. Allee's most significant research occurred during his time at the University of Chicago and at the Marine Biological Laboratory at Woods Hole in Massachusetts. His research findings led to many pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atheism
Atheism, in the broadest sense, is an absence of belief in the existence of deities. Less broadly, atheism is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the position that there no deities. Atheism is contrasted with theism, which in its most general form is the belief that at least one deity exists. The first individuals to identify themselves as atheists lived in the 18th century during the Age of Enlightenment. The French Revolution, noted for its "unprecedented atheism", witnessed the first significant political movement in history to advocate for the supremacy of human reason.Extract of page 22 In 1967, Albania declared itself the first official atheist coun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Murray East
Edward Murray East (October 4, 1879 – November 9, 1938) was an American plant geneticist, botanist, agronomist and eugenicist. He is known for his experiments that led to the development of hybrid corn and his support of 'forced' elimination of the 'unfit' based on eugenic findings. He worked at the Bussey Institute of Harvard University where he performed a key experiment showing the outcome of crosses between lines that differ in a quantitative trait. Work in eugenics Edward Murray East was a prominent figure in early American genetics and a strong supporter of the eugenics movement in the United States. He was strongly influenced by the work of Thomas Malthus, especially '' Essay on the Principle of Population'' (1798). This influence led East to create many of his ideas concerning birth control and immigration policy. He applied many of the ideas that he had developed in his research on the applications of genetics to agriculture to his ideas about human society. East ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
