|
Barbara A. Schaal
Barbara Anna Schaal (born 1947 in Berlin, Germany, naturalized in 1956) American scientist, evolutionary biologist, is a professor at Washington University in St. Louis and served as vice president of the National Academy of Sciences from 2005 to 2013. She is the first woman to be elected vice president of the academy. From 2009 to 2017, Schaal served on the President's Council of Advisors on Science and Technology (PCAST). Education Schaal grew up in Chicago, graduated from the University of Illinois, Chicago with a degree in biology, and received a doctorate from Yale University in 1974. Area of expertise Schaal is best known for her work on the genetics of plant species. She is known particularly well for her studies that use molecular genetic data to understand evolutionary processes such as gene flow, geographical differentiation, and the domestication of crop species. Career Schaal was on the faculty of the University of Houston and Ohio State University before join ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berlin
Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population within city limits, highest population within its city limits of any city in the European Union. The city is also one of the states of Germany, being the List of German states by area, third smallest state in the country by area. Berlin is surrounded by the state of Brandenburg, and Brandenburg's capital Potsdam is nearby. The urban area of Berlin has a population of over 4.6 million and is therefore the most populous urban area in Germany. The Berlin/Brandenburg Metropolitan Region, Berlin-Brandenburg capital region has around 6.2 million inhabitants and is Germany's second-largest metropolitan region after the Rhine-Ruhr region, as well as the List of EU metropolitan areas by GDP, fifth-biggest metropolitan region by GDP in the European Union. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene Flow
In population genetics, gene flow (also known as migration and allele flow) is the transfer of genetic variation, genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent allele frequencies and therefore can be considered a single effective population. It has been shown that it takes only "one migrant per generation" to prevent populations from diverging due to Genetic drift, drift. Populations can diverge due to Natural selection, selection even when they are exchanging alleles, if the selection pressure is strong enough. Gene flow is an important mechanism for transferring genetic diversity among populations. Migrants change the distribution of genetic diversity among populations, by modifying allele frequencies (the proportion of members carrying a particular variant of a gene). High rates of gene flow can reduce the genetic differentiation between the two groups, increasing homogeneity. Gene flow has b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Purpose: Because living persons may suffer personal harm from inappropriate information, we should watch their articles carefully. By adding an article to this category, it marks them with a notice about sources whenever someone tries to edit them, to remind them of WP:BLP (biographies of living persons) policy that these articles must maintain a neutral point of view, maintain factual accuracy, and be properly sourced. Recent changes to these articles are listed on Special:RecentChangesLinked/Living people. Organization: This category should not be sub-categorized. Entries are generally sorted by family name In many societies, a surname, family name, or last name is the mostly hereditary portion of one's personal name that indicates one's family. It is typically combined with a given name to form the full name of a person, although several give .... Maintenance: Individuals of advanced age (over 90), for whom there has been no new documentation in the last ten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1947 Births
It was the first year of the Cold War, which would last until 1991, ending with the dissolution of the Soviet Union. Events January * January–February – Winter of 1946–47 in the United Kingdom: The worst snowfall in the country in the 20th century causes extensive disruption of travel. Given the low ratio of private vehicle ownership at the time, it is mainly remembered in terms of its effects on the railway network. * January 1 – The ''Canadian Citizenship Act, 1946, Canadian Citizenship Act'' comes into effect, providing a Canadian citizenship separate from British law. * January 4 – First issue of weekly magazine ''Der Spiegel'' published in Hanover, Germany, edited by Rudolf Augstein. * January 10 – The United Nations adopts a resolution to take control of the free city of Trieste. * January 15 – Elizabeth Short, an aspiring actress nicknamed the "Black Dahlia", is found brutally murdered in a vacant lot in Los Angeles; the mysterious case is never solv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolutionary Biologists
Evolutionary biology is the subfield of biology that studies the evolutionary processes such as natural selection, common descent, and speciation that produced the diversity of life on Earth. In the 1930s, the discipline of evolutionary biology emerged through what Julian Huxley called the modern synthesis of understanding, from previously unrelated fields of biological research, such as genetics and ecology, systematics, and paleontology. The investigational range of current research has widened to encompass the genetic architecture of adaptation, molecular evolution, and the different forces that contribute to evolution, such as sexual selection, genetic drift, and biogeography. The newer field of evolutionary developmental biology ("evo-devo") investigates how embryogenesis is controlled, thus yielding a wider synthesis that integrates developmental biology with the fields of study covered by the earlier evolutionary synthesis. Subfields Evolution is the central ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
21st-century American Biologists
File:1st century collage.png, From top left, clockwise: Jesus is crucified by Roman authorities in Judaea (17th century painting). Four different men (Galba, Otho, Vitellius, and Vespasian) claim the title of Emperor within the span of a year; The Great Fire of Rome (18th-century painting) sees the destruction of two-thirds of the city, precipitating the empire's first persecution against Christians, who are blamed for the disaster; The Roman Colosseum is built and holds its inaugural games; Roman forces besiege Jerusalem during the First Jewish–Roman War (19th-century painting); The Trưng sisters lead a rebellion against the Chinese Han dynasty (anachronistic depiction); Boudica, queen of the British Iceni leads a rebellion against Rome (19th-century statue); Knife-shaped coin of the Xin dynasty., 335px rect 30 30 737 1077 Crucifixion of Jesus rect 767 30 1815 1077 Year of the Four Emperors rect 1846 30 3223 1077 Great Fire of Rome rect 30 1108 1106 2155 Boudican revolt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Philosophical Society
The American Philosophical Society (APS) is an American scholarly organization and learned society founded in 1743 in Philadelphia that promotes knowledge in the humanities and natural sciences through research, professional meetings, publications, source text, library resources, and community outreach. It was founded by the polymath Benjamin Franklin and is considered the first learned society founded in what became the United States.Philosophical Hall, the society's headquarters and a museum, is located just east of Independence Hall in Independence National Historical Park. In 1965, in recognition of the building's history, it was designated a National Historic Landmark. The society has about 1,000 elected members. As of April 2020, 5,710 members had been inducted since its creation. Through research grants, published journals, the American Philosophical Society Museum, an extensive library, and regular meetings, the society supports a variety of disciplines in the humanitie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Association For The Advancement Of Science
The American Association for the Advancement of Science (AAAS) is a United States–based international nonprofit with the stated mission of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsibility, and supporting science education, scientific education and science outreach for the betterment of all humanity. AAAS was the first permanent organization established to promote science and engineering nationally and to represent the interests of American researchers from across all scientific fields. It is the world's largest general scientific society, with over 120,000 members, and is the publisher of the well-known scientific journal ''Science (journal), Science''. History Creation The American Association for the Advancement of Science was created on September 20, 1848, at the Academy of Natural Sciences in Philadelphia, Pennsylvania. It was a reformation of the Association of American Geologists and Naturalists with the broaden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arts And Sciences At Washington University In St
The arts or creative arts are a vast range of human practices involving creative expression, storytelling, and cultural participation. The arts encompass diverse and plural modes of thought, deeds, and existence in an extensive range of media. Both a dynamic and characteristically constant feature of human life, the arts have developed into increasingly stylized and intricate forms. This is achieved through sustained and deliberate study, training, or theorizing within a particular tradition, generations, and even between civilizations. The arts are a medium through which humans cultivate distinct social, cultural, and individual identities while transmitting values, impressions, judgments, ideas, visions, spiritual meanings, patterns of life, and experiences across time and space. The arts are divided into three main branches. Examples of visual arts include architecture, ceramic art, drawing, filmmaking, painting, photography, and sculpture. Examples of literature include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Society For The Study Of Evolution
The Society for the Study of Evolution is a professional organization of evolutionary biologists. It was formed in the United States in 1946 to promote the study of evolution and the integration of various fields of science concerned with evolution and to organize the publication of a scientific journal to report on relevant new research across a variety of fields. The Society was established at a meeting in St. Louis on March 30, 1946. Fifty-seven scientists attended the meeting, which was chaired by Alfred E. Emerson. George Gaylord Simpson was elected as the Society's first President, with E. B. Babcock, Emerson, and J. T. Patterson as his Vice-presidents and Ernst Mayr as secretary. This society grew as an extension of the US National Research Council's Committee on Common Problems of Genetics and Paleontology (later renamed the Committee on Common Problems of Genetics, Paleontology and Systematics). The first annual meeting of the society was held in Boston, December 28– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botanical Society Of America
The Botanical Society of America (BSA) represents professional and amateur botanists, researchers, educators and students in over 80 countries of the world. It functions as a United States nonprofit 501(c)(3) membership society. History The society was first established in 1893 as an outgrowth from the Botanical Club of the American Association for the Advancement of Science at a meeting in Rochester, New York, on August 22, 1892. The organizing principles of the society were the enhancement of the study of plants in North America and to professionalize such efforts. In 1906, the organization merged with the Society for Plant Morphology and Physiology and the American Mycological Society. Sections The society has 16 special interest sections: * Bryological and lichenological * Developmental and Structural * Ecological * Economic * Genetics * Historical * Microbiological * Mycological * Paleobotanical * Phycological * Physiological * Phytochemical * Pteridological * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tyson Research Center
Tyson Research Center is a environmental field station owned and operated by Washington University in St. Louis, situated along a broad curve of the Meramec River, across from Castlewood State Park. Washington University obtained Tyson after it had been used by the U.S. Military for ordnance storage in 1963. It is part of the Henry Shaw Ozark Corridor which consists of over of protected lands. It is a member of the Organization of Biological Field Stations (OBFS). In 2010, its Living Learning Center became one of the first two buildings in the United States accredited as a "living building" under the Living Building Challenge. Tyson provides opportunities for environmental research and education for students and faculty from Washington University and beyond. Infrastructure and programs facilitate multi-scale research and teaching opportunities and collaboration across disciplines, institutions, and levels of academic training. Tyson Research Center was originally part of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
