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Chicken And The Egg
The chicken or the egg causality dilemma is commonly stated as the question, "which came first: the chicken or the egg?" The dilemma stems from the observation that all chickens hatch from eggs and all chicken eggs are laid by chickens. "Chicken-and-egg" is a metaphoric adjective describing situations where it is not clear which of two events should be considered the ''cause'' and which should be considered the ''effect'', to express a scenario of infinite regress, or to express the difficulty of sequencing actions where each seems to depend on others being done first. Plutarch posed the question as a philosophical matter in his essay " The Symposiacs", written in the 1st century CE. Ancient legacy The question represents an ancient folk paradox addressing the problem of origins and first cause. Aristotle, writing in the fourth century BCE, concluded that this was an infinite sequence, with no true origin. Plutarch, writing four centuries later, specifically highlighted this que ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maon Mosaic Hen
Maon may refer to: Places in Israel/Palestine *Bethmaus, Beth Maʿon, or Maon: ancient town in Galilee *Ma'on, Har Hevron, a Jewish settlement in the Hebron Hills area, southern West Bank * Horvat Maon (Hebron Hills)/Khirbet Ma'in & Tell Ma'in, ancient biblical city in Judea, now a ruin. See also under List of minor biblical places#Maon, List of minor biblical places: Maon, city and wilderness in Judah, mentioned in the Hebrew Bible. *Horvat Maon (western Negev), archaeological site located 20 kilometres (12 mi) southwest of Gaza Other *Preon, theoretical component of quarks *Maon (bug), ''Maon'' (bug), a planthopper in the Eurybrachidae family *Maon Kurosaki (1988–2023), a Japanese singer-songwriter See also *Mahon (other) *Typhoon Ma-on (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolution
Evolution is the change in the heritable Phenotypic trait, characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. The process of evolution has given rise to biodiversity at every level of biological organisation. The scientific theory of evolution by natural selection was conceived independently by two British naturalists, Charles Darwin and Alfred Russel Wallace, in the mid-19th century as an explanation for why organisms are adapted to their physical and biological environments. The theory was first set out in detail in Darwin's book ''On the Origin of Species''. Evolution by natural selection is established by observable facts about living organisms: (1) more offspring are often produced than can possibly survive; (2) phenotypic variatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catch-22 (logic)
A catch-22 is a paradoxical situation from which an individual cannot escape because of contradictory rules or limitations. The term was first used by Joseph Heller in his 1961 novel '' Catch-22''. Catch-22s often result from rules, regulations, or procedures that an individual is subject to, but has no control over, because to fight the rule is to accept it. Another example is a situation in which someone is in need of something that can only be had by not being in need of it (e.g. the only way to qualify for a loan is to prove to the bank that you do not need a loan). One connotation of the term is that the creators of the "catch-22" situation have created arbitrary rules in order to justify and conceal their own abuse of power. Origin and meaning Joseph Heller coined the term in his 1961 novel '' Catch-22'', which describes absurd bureaucratic constraints on soldiers in World War II. The term is introduced by the character Doc Daneeka, an army surgeon who invokes "Catch-22" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bootstrapping (compilers)
In computer science, bootstrapping is the technique for producing a Self-hosting (compilers), self-compiling compiler – that is, a compiler (or assembly language#Assembler, assembler) written in the source programming language that it intends to compile. An initial core version of the compiler (the ''bootstrap compiler'') is generated in a different language (which could be assembly language); successive expanded versions of the compiler are developed using this minimal subset of the language. The problem of compiling a self-compiling compiler has been called the Chicken or the egg, chicken-or-egg problem in compiler design, and bootstrapping is a solution to this problem. Bootstrapping is a fairly common practice when Creation of a Programming Language, creating a programming language. Many compilers for many programming languages are bootstrapped, including compilers for ALGOL, BASIC, C (programming language), C, Common Lisp, D (programming language), D, Eiffel (programming lan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BoingBoing
''Boing Boing'' is a website, first established as a zine in 1988, later becoming a group blog. Common topics and themes include technology, futurism, science fiction, gadgets, intellectual property, Disney, and left-wing politics. It twice won the Bloggies for Weblog of the Year, in 2004 and 2005. The editors are Mark Frauenfelder, David Pescovitz, Carla Sinclair, and Rob Beschizza, and the publisher is Jason Weisberger. One report named ''Boing Boing'' as the most popular blog in the world until 2006, when Chinese-language blogs became popular; it remained among the most widely linked and cited blogs into the 2010s. History ''Boing Boing'' (originally ''bOING bOING'') started as a zine in 1988 by married duo Mark Frauenfelder and Carla Sinclair. Issues were subtitled ''"The World's Greatest Neurozine"''. Associate editors included Gareth Branwyn, Jon Lebkowsky, Paco Nathan, and David Pescovitz. Along with '' Mondo 2000'', ''Boing Boing'' was an influence in the develo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcium Carbonate
Calcium carbonate is a chemical compound with the chemical formula . It is a common substance found in Rock (geology), rocks as the minerals calcite and aragonite, most notably in chalk and limestone, eggshells, gastropod shells, shellfish skeletons and pearls. Materials containing much calcium carbonate or resembling it are described as calcareous. Calcium carbonate is the active ingredient in agricultural lime and is produced when calcium ions in hard water react with carbonate ions to form limescale. It has medical use as a calcium supplement or as an antacid, but excessive consumption can be hazardous and cause hypercalcemia and digestive issues. Chemistry Calcium carbonate shares the typical properties of other carbonates. Notably, it: *reacts with acids, releasing carbonic acid which quickly disintegrates into carbon dioxide and water: : *releases carbon dioxide upon heating, called a thermal decomposition reaction, or calcination (to above 840 °C in the case of ), t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein
Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residue (biochemistry), residues. Proteins perform a vast array of functions within organisms, including Enzyme catalysis, catalysing metabolic reactions, DNA replication, Cell signaling, responding to stimuli, providing Cytoskeleton, structure to cells and Fibrous protein, organisms, and Intracellular transport, transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the Nucleic acid sequence, nucleotide sequence of their genes, and which usually results in protein folding into a specific Protein structure, 3D structure that determines its activity. A linear chain of amino acid residues is called a polypeptide. A protein contains at least one long polypeptide. Short polypeptides, containing less than 20–30 residues, are rarely considered to be proteins and are commonly called pep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mother Nature Network
Mother Nature Network (mnn.com) was a news and information website focused on sustainability and ranked by Alexa Internet as the most visited for-profit website in the world in its environmental category. It was labeled "the green CNN" by Time magazine, "green machine" by the Associated Press, and "best of the breed" by Fast Company. Founded in 2009 by former marketing executive Joel Babbit and Rolling Stones keyboardist Chuck Leavell, it was the flagship property of Narrative Content Group, whose equity partners included CNN and Discovery Inc."MNN.com Analytics" SimilarWeb. Retrieved 2015-08-02. MNN generated revenue via exclusive content category sponsorships versus the traditional advertising model utilized by most websites. Brand partners included Walmart, Mercedes-Benz, AT&T, |
Zygote
A zygote (; , ) is a eukaryote, eukaryotic cell (biology), cell formed by a fertilization event between two gametes. The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic information of a new individual organism. The sexual fusion of haploid cells is called karyogamy, the result of which is the formation of a Ploidy#Haploid and monoploid, diploid cell called the zygote or zygospore. History German zoologists Oscar Hertwig, Oscar and Richard Hertwig made some of the first discoveries on animal zygote formation in the late 19th century. In multicellular organisms The zygote is the earliest developmental stage. In humans and most other Anisogamy, anisogamous organisms, a zygote is formed when an egg cell and sperm, sperm cell come together to create a new unique organism. The formation of a cell potency, totipotent zygote with the potential to produce a whole organism depends on epigenetics, epigenetic reprogramming. DNA demethyla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proto-
Proto or PROTO may refer to: Language * Proto-, an English prefix meaning "first" Media * ''Proto'' (magazine), an American science magazine *Radio Proto in Cyprus Music * ''Proto'' (Holly Herndon album), 2019 * ''Proto'' (Leo O'Kelly album), 2002 * Proto (band), a progressive rock band from Memphis, Tennessee Organizations * Proto (tools), a tool company (formerly Plomb Tools), now a division of Stanley Black & Decker * Proto Motors, a South Korean sports car manufacturer and refitter * Proto Records, a British record company active in the 1980s; see Barry Evangeli * Proto (paintball), a paintball equipment manufacturing company People * Non-fictional ** Frank Proto, American composer and bassist ** Ludovic Proto (born 1965), French boxer ** Neil Thomas Proto (born 1945), American lawyer, teacher, lecturer, and author ** Silvio Proto, Belgian goalkeeper ** Proto (see Protus and Hyacinth), Christian martyr during the persecution of Valerian I * Fictional ** Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heredity (journal)
''Heredity'' is a monthly peer-reviewed scientific journal published by Nature Portfolio. It covers heredity in a biological sense, i.e. genetics. The journal was founded by Ronald Fisher and C. D. Darlington in 1947 and is the official journal of The Genetics Society. From 1996 the publishing was taken over by Nature Portfolio. The editor-in-chief is Sara Goodacre. According to the ''Journal Citation Reports'', the journal has a 2021 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... of 3.832, ranking it 61st out of 173 journals in the category "Ecology", 19th out of 51 journals in the category "Evolutionary Biology", and 79th out of 175 journals in the category "Genetics & Heredity". References External links * The Genetics Society* Genetics in the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Junglefowl
The red junglefowl (''Gallus gallus''), also known as the Indian red junglefowl (and formerly the bankiva or bankiva-fowl), is a species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ... of Tropics, tropical, predominantly Terrestrial animal, terrestrial bird in the fowl and pheasant family, Phasianidae, found across much of Southeast Asia, Southeast and parts of South Asia. The red junglefowl was the primary species to give rise to today's many breeds of domesticated chicken (''G. g. domesticus''); additionally, the related grey junglefowl (''G. sonneratii''), Sri Lankan junglefowl (''G. lafayettii'') and the green junglefowl, Javanese green junglefowl (''G. varius'') have also contributed genetic material to the gene pool of the modern chicken. Molecular evidence, derived from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
