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Aaron Franklin Shull
Aaron Franklin Shull (1 August 1881 – 7 November 1961) was an American zoologist and professor at the University of Michigan. He contributed to studies on genetics and evolution. He was noted as an influential teacher who took a keen interest in the teaching of biology and wrote several textbooks. Shull was born in Miami County, Ohio to Harrison and Catherine Ryman Shull. Two of his siblings included Charles Albert Shull (1897–1962) who became a professor of plant physiology and George Harrison Shull who became professor of botany and genetics. Another brother was the botanical illustrator James Marion Shull (1872–1948). He grew up on the family farm, learning first hand about agriculture and plants. After an informal early schooling, he received an AB from the University of Michigan in 1908 and briefly joined the Michigan Biological Survey. He then joined Columbia University where he became interested in heredity, inspired by T. H. Morgan and E. B. Wilson. He examined the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miami County, Ohio
Miami County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 108,774. Its county seat is Troy. The county is named in honor of the Miami people. Miami County is part of the Dayton, OH Metropolitan Statistical Area. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.8%) is water. Adjacent counties * Shelby County (north) * Champaign County (northeast) * Clark County (southeast) * Montgomery County (south) * Darke County (west) Demographics 2000 census As of the census of 2000, there were 98,868 people, 38,437 households, and 27,943 families living in the county. The population density was 243 people per square mile (94/km2). There were 40,554 housing units at an average density of 100 per square mile (38/km2). The racial makeup of the county was 95.78% White, 1.95% Black or African American, 0.19% Native American, 0.79% Asian, 0.01% Pacific Islander, 0.28% from other r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Albert Shull
Charles is a masculine given name predominantly found in English and French speaking countries. It is from the French form ''Charles'' of the Proto-Germanic name (in runic alphabet) or ''*karilaz'' (in Latin alphabet), whose meaning was "free man". The Old English descendant of this word was '' Ċearl'' or ''Ċeorl'', as the name of King Cearl of Mercia, that disappeared after the Norman conquest of England. The name was notably borne by Charlemagne (Charles the Great), and was at the time Latinized as ''Karolus'' (as in ''Vita Karoli Magni''), later also as '' Carolus''. Some Germanic languages, for example Dutch and German, have retained the word in two separate senses. In the particular case of Dutch, ''Karel'' refers to the given name, whereas the noun ''kerel'' means "a bloke, fellow, man". Etymology The name's etymology is a Common Germanic noun ''*karilaz'' meaning "free man", which survives in English as churl (< Old English ''ċeorl''), which developed its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 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 offspr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Marion Shull
James Marion Shull (1872–1948) was an American botanist known for his iris and daylily cultivars and botanical illustrations. Career J. Marion Shull began his career with the government as a dendrological illustrator for the U.S. Forest Service (1907–1909). He moved on to work for more than three decades as a botanist and botanical illustrator for the Bureau of Plant Industry at the U. S. Department of Agriculture, first as a botanical artist (1909–1925) and then as an associate botanist (1925–1942). He painted over 750 watercolors of nuts, fruits, and other botanical specimens, including walnuts, pineapples, figs, and especially citrus and apples for the USDA. He was a fruit disease investigator for the department, and many of his illustrations show specimens affected by disease. At the USDA, he formed part of a select group of illustrators—including Deborah Griscom Passmore, Amanda Newton, Royal Charles Steadman, Ellen Isham Schutt, and Elsie Lower—whose painting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columbia University
Columbia University (also known as Columbia, and officially as Columbia University in the City of New York) is a private research university in New York City. Established in 1754 as King's College on the grounds of Trinity Church in Manhattan, Columbia is the oldest institution of higher education in New York and the fifth-oldest institution of higher learning in the United States. It is one of nine colonial colleges founded prior to the Declaration of Independence. It is a member of the Ivy League. Columbia is ranked among the top universities in the world. Columbia was established by royal charter under George II of Great Britain. It was renamed Columbia College in 1784 following the American Revolution, and in 1787 was placed under a private board of trustees headed by former students Alexander Hamilton and John Jay. In 1896, the campus was moved to its current location in Morningside Heights and renamed Columbia University. Columbia scientists and scholars hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Hunt Morgan
Thomas Hunt Morgan (September 25, 1866 – December 4, 1945) was an American evolutionary biologist, geneticist, embryologist, and science author who won the Nobel Prize in Physiology or Medicine in 1933 for discoveries elucidating the role that the chromosome plays in heredity. Morgan received his Ph.D. from Johns Hopkins University in zoology in 1890 and researched embryology during his tenure at Bryn Mawr. Following the rediscovery of Mendelian inheritance in 1900, Morgan began to study the genetic characteristics of the fruit fly ''Drosophila melanogaster''. In his famous Fly Room at Columbia University's Schermerhorn Hall, Morgan demonstrated that genes are carried on chromosomes and are the mechanical basis of heredity. These discoveries formed the basis of the modern science of genetics. During his distinguished career, Morgan wrote 22 books and 370 scientific papers. As a result of his work, ''Drosophila'' became a major model organism in contemporary genetics. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edmund Beecher Wilson
Edmund Beecher Wilson (October 19, 1856 – March 3, 1939) was a pioneering American zoologist and geneticist. He wrote one of the most influential textbooks in modern biology, ''The Cell''. Career Wilson was born in Geneva, Illinois, the son of Isaac G. Wilson, a judge, and his wife, Carioline Clark. He graduated from Yale University in 1878. He earned his Ph.D. at Johns Hopkins in 1881. He was a lecturer at Williams College in 1883–84 and at the Massachusetts Institute of Technology in 1884–85. He served as professor of biology at Bryn Mawr College from 1885 to 1891. In 1888, he was elected as a member to the American Philosophical Society. He spent the balance of his career at Columbia University where he was successively adjunct professor of biology (1891–94), professor of invertebrate zoology (1894–1897), and professor of zoology (from 1897). Wilson is credited as America's first cell biologist. In 1898 he used the similarity in embryos to describe phylo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotifer
The rotifers (, from the Latin , "wheel", and , "bearing"), commonly called wheel animals or wheel animalcules, make up a phylum (Rotifera ) of microscopic and near-microscopic pseudocoelomate animals. They were first described by Rev. John Harris in 1696, and other forms were described by Antonie van Leeuwenhoek in 1703. Most rotifers are around long (although their size can range from to over ), and are common in freshwater environments throughout the world with a few saltwater species. Some rotifers are free swimming and truly planktonic, others move by inchworming along a substrate, and some are sessile, living inside tubes or gelatinous holdfasts that are attached to a substrate. About 25 species are colonial (e.g., ''Sinantherina semibullata''), either sessile or planktonic. Rotifers are an important part of the freshwater zooplankton, being a major foodsource and with many species also contributing to the decomposition of soil organic matter. Most species of the r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waldo Lee McAtee
Waldo Lee McAtee (21 January 1883 - 7 January 1962) was an American ecologist and ornithologist. He wrote extensively about the feeding habits of birds and mammals and described over 460 new species of insects. Early life and education Waldo Lee McAtee was born on January 21, 1883, in Jalapa, Indiana. McAtee was a student at Indiana University from 1900 to 1906, majoring in Biology and Zoology. He earned his A.B. in 1904 and his A.M. in 1906. McAtee was a very active student at IU. He served as curator for the I.U. Zoological Museum, where his duties included classifying specimens. When professors were absent, McAtee was often called upon to teach science classes such as Embryology. He was also an active participant in I.U. athletic events, particularly football games. McAtee served as a yell leader over a group called the "Howling Hundred", where he rallied students to attend games and even wrote fight songs to taunt the opposing team. During his studies, McAtee spent a summer wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaret Jeffrey Buckley
Margaret is a female first name, derived via French () and Latin () from grc, μαργαρίτης () meaning "pearl". The Greek is borrowed from Persian. Margaret has been an English name since the 11th century, and remained popular throughout the Middle Ages. It became less popular between the 16th century and 18th century, but became more common again after this period, becoming the second-most popular female name in the United States in 1903. Since this time, it has become less common, but was still the ninth-most common name for women of all ages in the United States as of the 1990 census. Margaret has many diminutive forms in many different languages, including Maggie, Madge, Daisy, Margarete, Marge, Margo, Margie, Marjorie, Meg, Megan, Rita, Greta, Gretchen, and Peggy. Name variants Full name * (Irish) * (Irish) * (Dutch), (German), (Swedish) * (English) Diminutives * (English) * (English) First half * (French) * (Welsh) Second half * (English), (Germa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elizabeth Shull Russell
Elizabeth Shull Russell (May 1, 1913 – May 28, 2001), also known as "Tibby" Russell, was an American biologist in the field of mammalian developmental genetics, spending most of her career at the Jackson Laboratory in Bar Harbor, Maine. Russell is most recognized for her ground breaking work in pigmentation, blood-forming cells, and germ cells. She also raised awareness of the benefits of genetically-defined laboratory animals in biomedical research. Personal life Russell was born Elizabeth Buckley Shull born in Ann Arbor, Michigan. She was the eldest child of Margaret Jeffrey Buckley and Aaron Franklin Shull, both of whom were zoologists, and the niece of George H. Shull, a prominent geneticist. Elizabeth was fascinated by science and the scientific approach from an early age, leading her to study zoology at the University of Michigan, from which she graduated in 1933. After receiving a scholarship from Columbia University and completing her master's degree in 1934, she went t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1881 Births
Events January–March * January 1– 24 – Siege of Geok Tepe: Russian troops under General Mikhail Skobelev defeat the Turkomans. * January 13 – War of the Pacific – Battle of San Juan and Chorrillos: The Chilean army defeats Peruvian forces. * January 15 – War of the Pacific – Battle of Miraflores: The Chileans take Lima, capital of Peru, after defeating its second line of defense in Miraflores. * January 24 – William Edward Forster, chief secretary for Ireland, introduces his Coercion Bill, which temporarily suspends habeas corpus so that those people suspected of committing an offence can be detained without trial; it goes through a long debate before it is accepted February 2. * January 25 – Thomas Edison and Alexander Graham Bell form the Oriental Telephone Company. * February 13 – The first issue of the feminist newspaper ''La Citoyenne'' is published by Hubertine Auclert. * February 16 – The Canad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
