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George H. Shull
George Harrison Shull (April 15, 1874 – September 28, 1954) was an eminent American plant geneticist and the younger brother of botanical illustrator and plant breeder J. Marion Shull. He was born on a farm in Clark County, Ohio, graduated from Antioch College in 1901 and from the University of Chicago (Ph.D.) in 1904, served as botanical expert to the Bureau of Plant Industry in 1903-04, and thenceforth was a botanical investigator of the Carnegie Institution at the Station for Experimental Evolution, Cold Spring Harbor, N. Y., giving special attention to the results of Luther Burbank's work. Shull played an important role in the development of hybrid maize (in the USA, popularly 'corn') which had great impact upon global agriculture. As a geneticist, Shull worked with maize plants. He was interested in pure breeds not for their economic value but for his experiments in genetics. He produced maize breeds that bred true and then crossed these strains. The hybrid offspring o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clark County, Ohio
Clark County is a county located in the west central portion of the U.S. state of Ohio. As of the 2020 census, the population was 136,001. Its county seat is Springfield. The county was created on March 1, 1818, and was named for General George Rogers Clark, a hero of the American Revolution. Clark County comprises the Springfield, OH Metropolitan Statistical Area, which is also included in the Dayton-Springfield- Sidney-OH Combined Statistical Area. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (1.3%) is water. It is the third-smallest county in Ohio by total area. Adjacent counties * Champaign County (north) * Madison County (east) * Greene County (south) * Montgomery County (southwest) * Miami County (west) Demographics 2000 census As of the census of 2000, there were 144,742 people, 56,648 households, and 39,370 families living in the county. The population density was 362 people per square mile (140/km2). There ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maize
Maize ( ; ''Zea mays'' subsp. ''mays'', from es, maíz after tnq, mahiz), also known as corn (North American and Australian English), is a cereal grain first domesticated by indigenous peoples in southern Mexico about 10,000 years ago. The leafy stalk of the plant produces pollen inflorescences (or "tassels") and separate ovuliferous inflorescences called ears that when fertilized yield kernels or seeds, which are fruits. The term ''maize'' is preferred in formal, scientific, and international usage as a common name because it refers specifically to this one grain, unlike ''corn'', which has a complex variety of meanings that vary by context and geographic region. Maize has become a staple food in many parts of the world, with the total production of maize surpassing that of wheat or rice. In addition to being consumed directly by humans (often in the form of masa), maize is also used for corn ethanol, animal feed and other maize products, such as corn starch and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1874 Births
Events January–March * January 1 – New York City annexes The Bronx. * January 2 – Ignacio María González becomes head of state of the Dominican Republic for the first time. * January 3 – Third Carlist War – Battle of Caspe: Campaigning on the Ebro in Aragon for the Spanish Republican Government, Colonel Eulogio Despujol surprises a Carlist force under Manuel Marco de Bello at Caspe, northeast of Alcañiz. In a brilliant action the Carlists are routed, losing 200 prisoners and 80 horses, while Despujol is promoted to Brigadier and becomes Conde de Caspe. * January 20 – The Pangkor Treaty (also known as the Pangkor Engagement), by which the British extended their control over first the Sultanate of Perak, and later the other independent Malay States, is signed. * January 23 **Alfred, Duke of Saxe-Coburg and Gotha, Prince Alfred, Duke of Edinburgh, second son of Queen Victoria, marries Grand Duchess Maria Alexandrovna of Russia, only daug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nina Fedoroff
Nina Vsevolod Fedoroff (born April 9, 1942) is an American molecular biologist known for her research in life sciences and biotechnology, especially transposable elements or jumping genes. and plant stress response.Elder, Andy (Fall 2002Faces of Penn State, 2002: Nina Fedoroff Pennsylvania State University, PennState Eberly College of Science, Retrieved 14 May 2012 In 2007, President George W. Bush awarded her the National Medal of Science, she is also a member of the United States National Academy of Sciences, the American Academy of Arts and Sciences, the European Academy of Sciences, and the American Academy of Microbiology. Early Days Fedoroff, whose father was a Russian immigrant to the US and her mother a first generation immigrant, was born in Cleveland, Ohio. Her first language was Russian.Nina Fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science (journal)
''Science'', also widely referred to as ''Science Magazine'', is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is over 400,000 people. ''Science'' is based in Washington, D.C., United States, with a second office in Cambridge, UK. Contents The major focus of the journal is publishing important original scientific research and research reviews, but ''Science'' also publishes science-related news, opinions on science policy and other matters of interest to scientists and others who are concerned with the wide implications of science and technology. Unlike most scientific journals, which focus on a specific field, ''Science'' and its rival ''Nature (journal), Nature'' c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Rosa, California
Santa Rosa (Spanish language, Spanish for "Rose of Lima, Saint Rose") is a city and the county seat of Sonoma County, California, Sonoma County, in the North Bay (San Francisco Bay Area), North Bay region of the San Francisco Bay Area, Bay Area in California. Its estimated 2019 population was 178,127. It is the largest city in California's Wine Country and Redwood Empire, Redwood Coast. It is the fifth most populous city in the Bay Area after San Jose, California, San Jose, San Francisco, Oakland, California, Oakland, and Fremont, California, Fremont; and the List of largest California cities by population, 25th most populous city in California. History Early history Before the arrival of Europeans, what became known as the Santa Rosa Plain was occupied by a strong and populous tribe of Pomo natives known as the Bitakomtara. The Bitakomtara controlled the area closely, barring passage to others until permission was arranged. Those who entered without permission were subject t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harrison Shull
Harrison may refer to: People * Harrison (name) * Harrison family of Virginia, United States Places In Australia: * Harrison, Australian Capital Territory, suburb in the Canberra district of Gungahlin In Canada: * Inukjuak, Quebec, or "Port Harrison", Nunavik region of northern Quebec, Canada * Harrison Lake, a lake in the Lower Mainland region of British Columbia, Canada ** Harrison Hot Springs, resort village in British Columbia, Canada, located on Harrison Lake ** Harrison River, a tributary of the Fraser River and which is the outlet of Harrison Lake ** Harrison Bay (British Columbia), a side water of the river ** Harrison Mills, British Columbia, a locality and former mill town at the mouth of the Harrison River ** Harrison Knob, a prominent hill and important archaeological site adjacent to the mouth of the Harrison River * Harrison Island (Nunavut), Hudson Bay, Nunavut * Harrison Islands, Gulf of Boothia, Nunavut * Harrison Settlement, Nova Scotia In the Philippines: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetics (journal)
''Genetics'' is a monthly scientific journal publishing investigations bearing on heredity, genetics, biochemistry and molecular biology. Genetics is published by the Genetics Society of America. It has a delayed open access policy, and makes articles available online without a subscription after 12 months have elapsed since first publication. Since 2010, it is published online-only.http://www.councilscienceeditors.org/wp-content/uploads/v36n1p14-15_17.pdf George Harrison Shull George Harrison Shull (April 15, 1874 – September 28, 1954) was an eminent American plant geneticist and the younger brother of botanical illustrator and plant breeder J. Marion Shull. He was born on a farm in Clark County, Ohio, graduated fr ... was the founding editor of ''Genetics'' in 1916. Editors-in-Chief References External linksOfficial website Genetics journals Delayed open access journals English-language journals Publications established in 1916 Online-only journals {{ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterosis
Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of its parents. These effects can be due to Mendelian or non-Mendelian inheritance. Definitions In proposing the term heterosis to replace the older term heterozygosis, G.H. Shull aimed to avoid limiting the term to the effects that can be explained by heterozygosity in Mendelian inheritance. Heterosis is often discussed as the opposite of inbreeding depression, although differences in these two concepts can be seen in evolutionary considerations such as the role of genetic variation or the effects of genetic drift in small populations on these concepts. Inbreeding depression occurs when related parents have children with traits that negatively influence their fitness largely due to homozygosity. In such instances, outcrossing shoul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States National Academy Of Sciences
The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the National Academy of Medicine (NAM). As a national academy, new members of the organization are elected annually by current members, based on their distinguished and continuing achievements in original research. Election to the National Academy is one of the highest honors in the scientific field. Members of the National Academy of Sciences serve '' pro bono'' as "advisers to the nation" on science, engineering, and medicine. The group holds a congressional charter under Title 36 of the United States Code. Founded in 1863 as a result of an Act of Congress that was approved by Abraham Lincoln, the NAS is charged with "providing independent, objective advice to the nation on matters related to science and technology. ... to provide scie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Offspring
In biology, offspring are the young creation of living organisms, produced either by a single organism or, in the case of sexual reproduction, two organisms. Collective offspring may be known as a brood or progeny in a more general way. This can refer to a set of simultaneous offspring, such as the chicks hatched from one clutch of eggs, or to all the offspring, as with the honeybee. Human offspring ( descendants) are referred to as children (without reference to age, thus one can refer to a parent's " minor children" or " adult children" or " infant children" or " teenage children" depending on their age); male children are sons and female children are daughters (see kinship). Offspring can occur after mating or after artificial insemination. Offspring contains many parts and properties that are precise and accurate in what they consist of, and what they define. As the offspring of a new species, also known as a child or f1 generation, consist of genes of the father and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strain (biology)
In biology, a strain is a genetic variant, a subtype or a culture within a biological species. Strains are often seen as inherently artificial concepts, characterized by a specific intent for genetic isolation. This is most easily observed in microbiology where strains are derived from a single cell colony and are typically quarantined by the physical constraints of a Petri dish. Strains are also commonly referred to within virology, botany, and with rodents used in experimental studies. Microbiology and virology It has been said that "there is no universally accepted definition for the terms 'strain', ' variant', and 'isolate' in the virology community, and most virologists simply copy the usage of terms from others". A strain is a genetic variant or subtype of a microorganism (e.g., a virus, bacterium or fungus). For example, a "flu strain" is a certain biological form of the influenza or "flu" virus. These flu strains are characterized by their differing isoforms of su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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