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Yuri Filipchenko
Yuri Aleksandrovich Filipchenko (russian: Юрий Александрович Филипченко; sometimes spelled Philipchenko) (1882 — 1930) was a Russian entomologist who coined the terms ''microevolution'' and '' macroevolution,'' as well as the mentor of geneticist Theodosius Dobzhansky. Though he himself was an orthogeneticist, he was one of the first scientists to incorporate the laws of Mendel into evolutionary theory and thus had a great influence on The Modern Synthesis. He established a genetics laboratory in Leningrad undertaking experimental work with ''Drosophila melanogaster''. Theodosius Dobzhansky worked with him from 1924. Filipchenko is also known for his work in Soviet eugenics, though his work in the subject would later result in his public denunciation due to the rise of Stalinism and increased criticisms that eugenics represented bourgeois science. Biography Early life and education Yuri Filipchenko was born on February 13, 1882 in Zlyn' in Bolkhov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolkhovsky District
Bolkhovsky District (russian: Бо́лховский райо́н) is an administrativeLaw #522-OZ and municipalLaw #464-OZ district (raion), one of the twenty-four in Oryol Oblast, Russia. It is located in the north of the oblast. The area of the district is . Its administrative center is the town of Bolkhov. Population: 18,041 ( 2010 Census); The population of Bolkhov accounts for 63.3% of the district's total population. Notable residents *Yevgeni Preobrazhensky Yevgeni Alekseyevich Preobrazhensky ( rus, Евге́ний Алексе́евич Преображе́нский, p=jɪvˈɡʲenʲɪj ɐlʲɪˈksʲejɪvʲɪt͡ɕ prʲɪəbrɐˈʐɛnskʲɪj; 1886–1937) was a Russian revolutionary, Soviet econom ... (1886–1937), revolutionary, economist and sociologist, born in Bolkhov * Ilya Starinov (1900–2000), military officer, noted Soviet saboteur, born in the village of Voynovo References Notes Sources * * {{Use mdy dates, date=October 2012 Districts of Oryol O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drosophila Melanogaster
''Drosophila melanogaster'' is a species of fly (the taxonomic order Diptera) in the family Drosophilidae. The species is often referred to as the fruit fly or lesser fruit fly, or less commonly the " vinegar fly" or " pomace fly". Starting with Charles W. Woodworth's 1901 proposal of the use of this species as a model organism, ''D. melanogaster'' continues to be widely used for biological research in genetics, physiology, microbial pathogenesis, and life history evolution. As of 2017, five Nobel Prizes have been awarded to drosophilists for their work using the insect. ''D. melanogaster'' is typically used in research owing to its rapid life cycle, relatively simple genetics with only four pairs of chromosomes, and large number of offspring per generation. It was originally an African species, with all non-African lineages having a common origin. Its geographic range includes all continents, including islands. ''D. melanogaster'' is a common pest in homes, restaurants, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolution
Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes, which are passed on from parent to offspring during reproduction. Variation tends to exist within any given population as a result of genetic mutation and recombination. Evolution occurs when evolutionary processes such as natural selection (including sexual selection) and genetic drift act on this variation, resulting in certain characteristics becoming more common or more rare within a population. The evolutionary pressures that determine whether a characteristic is common or rare within a population constantly change, resulting in a change in heritable characteristics arising over successive generations. It is this process of evolution that has given rise to biodiversity at every level of biological organisation, including the levels of species, individual organisms, and molecules. The theory of evol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Front Cover Of Variabilität Und Variation
Front may refer to: Arts, entertainment, and media Films * ''The Front'' (1943 film), a 1943 Soviet drama film * ''The Front'', 1976 film Music *The Front (band), an American rock band signed to Columbia Records and active in the 1980s and early 1990s *The Front (Canadian band), a Canadian studio band from the 1980s Periodicals * ''Front'' (magazine), a British men's magazine * ''Front Illustrated Paper'', a publication of the Yugoslav People's Army Television * Front TV, a Toronto broadcast design and branding firm * "The Front" (''The Blacklist''), a 2014 episode of the TV series ''The Blacklist'' * "The Front" (''The Simpsons''), a 1993 episode of the TV series ''The Simpsons'' Military * Front (military), a geographical area where armies are engaged in conflict * Front (military formation), roughly, an army group, especially in eastern Europe Places * Front, California, former name of Brown, California * Front, Piedmont, an Italian municipality * The Front, now part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smolensky Cemetery
Smolensky Cemetery () is the oldest continuously operating cemetery in Saint Petersburg, Russia.The Encyclopaedia of St. Petersburg It occupies a rectangular parcel in the western part of , on the bank of the small Smolenka River, and is divided into the Orthodox, , and |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies of World War II, Allies and the Axis powers. World War II was a total war that directly involved more than 100 million Military personnel, personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Air warfare of World War II, Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the Atomic bombings of Hiroshima and Nagasaki, only two nuclear weapons ever used in war. World War II was by far the List of wars by death toll, deadliest conflict in hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blockade Of Leningrad
The siege of Leningrad (russian: links=no, translit=Blokada Leningrada, Блокада Ленинграда; german: links=no, Leningrader Blockade; ) was a prolonged military blockade undertaken by the Axis powers against the Soviet city of Leningrad (present-day Saint Petersburg) on the Eastern Front of World War II. Germany's Army Group North advanced from the south, while the German-allied Finnish army invaded from the north and completed the ring around the city. The siege began on 8 September 1941, when the Wehrmacht severed the last road to the city. Although Soviet forces managed to open a narrow land corridor to the city on 18 January 1943, the Red Army did not lift the siege until 27 January 1944, 872 days after it began. The blockade became one of the longest and most destructive sieges in history, and it was possibly the costliest siege in history due to the number of casualties which were suffered throughout its duration. While not classed as a war crime at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Five-year Plan
The first five-year plan (russian: I пятилетний план, ) of the Union of Soviet Socialist Republics (USSR) was a list of economic goals, created by Communist Party General Secretary Joseph Stalin, based on his policy of socialism in one country. The plan was implemented in 1928 and took effect until 1932. The Soviet Union entered a series of five-year plans which began in 1928 under the rule of Joseph Stalin. Stalin launched what would later be referred to as a "revolution from above" to improve the Soviet Union's domestic policy. The policies were centered around rapid industrialization and the collectivization of agriculture. Stalin desired to remove and replace any policies created under the New Economic Policy. The plan, overall, was to transition the Soviet Union from a weak, poorly controlled, agriculture state, into an industrial powerhouse. While the vision was grand, its planning was ineffective and unrealistic given the short amount of time given to mee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Socialist Revolutionary Party
The Socialist Revolutionary Party, or the Party of Socialist-Revolutionaries (the SRs, , or Esers, russian: эсеры, translit=esery, label=none; russian: Партия социалистов-революционеров, ), was a major political party in late Imperial Russia, and both phases of the Russian Revolution and early Soviet Russia. The SRs were agrarian socialists and supporters of a democratic socialist Russian republic. The ideological heirs of the Narodniks, the SRs won a mass following among the Russian peasantry by endorsing the overthrow of the Tsar and the redistribution of land to the peasants. The SRs boycotted the elections to the First Duma following the Revolution of 1905 alongside the Russian Social Democratic Labour Party, but chose to run in the elections to the Second Duma and received the majority of the few seats allotted to the peasantry. Following the 1907 coup, the SRs boycotted all subsequent Dumas until the fall of the Tsar in the Febru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nevsky District
Nevsky District (russian: Не́вский райо́н) is a district of the federal city of St. Petersburg, Russia. As of the 2010 Census, its population was 466,013; up from 438,061 recorded in the 2002 Census. Geography The district is the only one in St. Petersburg to lie on both banks of the Neva River. It borders with Krasnogvardeysky and Tsentralny Districts in the north, Vsevolozhsky District of Leningrad Oblast in the east, Kolpinsky District in the southeast, and with Frunzensky District in the west. History The district was established in 1917. Municipal divisions Nevsky District comprises the following nine municipal okrugs:Law #411-68 * #54 *Ivanovsky * Narodny * Nevskaya Zastava * Nevsky * Obukhovsky *Okkervil The Okkervil () is a river in Leningrad Oblast and the eastern part of the city of Saint Petersburg, Russia. It is the largest left tributary of the Okhta. It is long and wide. The name ''Okkervil'' appeared in the 17th century, af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Nägeli
Carl Wilhelm von Nägeli (26 or 27 March 1817 – 10 May 1891) was a Swiss botanist. He studied cell division and pollination but became known as the man who discouraged Gregor Mendel from further work on genetics. He rejected natural selection as a mechanism of evolution, favouring orthogenesis driven by a supposed "inner perfecting principle". Birth and education Nägeli was born in Kilchberg near Zürich, where he studied medicine at the University of Zürich. From 1839, he studied botany under A. P. de Candolle at Geneva, and graduated with a botanical thesis at Zürich in 1840. His attention having been directed by Matthias Jakob Schleiden, then professor of botany at Jena, to the microscopical study of plants, he engaged more particularly in that branch of research. He also coined the term "meristematic tissue" in 1858. Academic career Soon after graduation he became Privatdozent and subsequently professor extraordinary, in the University of Zürich; later he was calle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
On The Origin Of Species
''On the Origin of Species'' (or, more completely, ''On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life''),The book's full original title was ''On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life''. In the 1872 sixth edition, "On" was omitted, so the full title is ''The origin of species by means of natural selection, or the preservation of favoured races in the struggle for life.'' This edition is usually known as ''The Origin of Species.'' The 6th is Darwin's final edition; there were minor modifications in the text of certain subsequent issues. See Freeman, R. B. In Van Wyhe, John, ed. ''Darwin Online: On the Origin of Species'', 2002. published on 24 November 1859, is a work of scientific literature by Charles Darwin that is considered to be the foundation of evolutionary biology. Darwin's book introduced the scientific theory that popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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