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Natural selection is the process by which favorable heritable traits become more common in successive generations of a population of reproducing organisms, and unfavorable heritable traits become less common, due to differential reproduction of genotypes. Natural selection acts on the phenotype, or the observable characteristics of an organism, such that individuals with favorable phenotypes are more likely to survive and reproduce than those with less favorable phenotypes. The phenotype's genetic basis, genotype associated with the favorable phenotype, will increase in frequency over the following generations. Over time, this process may result in adaptations that specialize organisms for particular ecological niches and may eventually result in the emergence of new species. In other words, natural selection is the mechanism by which evolution may take place in a population of a specific organism.

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Wikipedia About Natural Selection

Natural selection is the process by which favorable heritable traits become more common in successive generations of a population of reproducing organisms, and unfavorable heritable traits become less common, due to differential reproduction of genotypes. Natural selection acts on the phenotype, or the observable characteristics of an organism, such that individuals with favorable phenotypes are more likely to survive and reproduce than those with less favorable phenotypes. The phenotype's genetic basis, genotype associated with the favorable phenotype, will increase in frequency over the following generations. Over time, this process may result in adaptations that specialize organisms for particular ecological niches and may eventually result in the emergence of new species. In other words, natural selection is the mechanism by which evolution may take place in a population of a specific organism.

Natural selection is one of the cornerstones of modern biology. The term was introduced by Charles Darwin in his groundbreaking 1859 book The Origin of Species Darwin C (1859) On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life John Murray, London; modern reprint Published online at The complete work of Charles Darwin online: On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. in which natural selection was described by analogy to artificial selection, a process by which animals with traits considered desirable by human breeders are systematically favored for reproduction. The concept of natural selection was originally developed in the absence of a valid theory of inheritance; at the time of Darwin's writing, nothing was known of modern genetics. Although Gregor Mendel, the father of modern genetics, was a contemporary of Darwin's, his work would lie in obscurity until the early 20th century. The union of traditional Darwinian evolution with subsequent discoveries in classical and molecular genetics is termed the modern evolutionary synthesis. Although other mechanisms of molecular evolution, such as the neutral theory advanced by Motoo Kimura, have been identified as important causes of genetic diversity, natural selection remains the single primary explanation for adaptive evolution.

General principles

image:Darwin's finches.jpeg

See also: Genotype-phenotype distinction.

Natural selection acts on an organism's phenotype, or physical characteristics. Phenotype is determined by an organism's genetic make-up (genotype) and the environment in which the organism lives. Often, natural selection acts on specific traits of an individual, and the terms phenotype and genotype are used narrowly to indicate these specific traits.

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Natural selection - encyclopedia article - Citizendium

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Early Theories of Evolution: Darwin and Natural Selection

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East Bay Events Calendar:

Berkeley Daily PlanetWalkers 55+: Explore El Cerrito Hillside Gems Join a down-and-up loop exploring little-known creekside paths and great views from El Cerrito’s Hillside Natural Area. Meet at Arlington Park, 1120 Arlington (AC Transit 7) at 9 a.m. Wear hiking shoes; bring sticks if you use them.http://www.berkeleydailyplanet.com/issue/2008-10-02/article/...

Museum and Gallery Listings

New York TimesSelective listings from art critics of The New York Times.http://www.nytimes.com/2008/10/03/arts/design/03wart.html

News in brief

West Salem Coulee NewsHere are a selection of brief news items from this week's paper edition, and possibly a few news briefs that didn't make it in the paper.http://www.couleenews.com/articles/2008/10/02/news/08briefs....

Enhance Kitchen Lighting and Ventilation

Carteret County News-Times(ARA) - Many families spend more time in the kitchen than in any other room in their home. For maximum enjoyment, this all-important space should be as comfortable and appealing, and as green as possible with natural light and fresh air being key elements.http://www.carteretnewstimes.com/articles/2008/10/02/ara/hom...

Miami Dolphins motormouth Joey Porter is silencing his critics

Canadian Press via Yahoo! News DAVIE, Fla. - Leaning back in a chair at his locker, all-pro motormouth Joey Porter was in the midst of another monologue, bemoaning media spin, the robotic nature of NFL interviews and the copious baloney they produce.http://news.yahoo.com/s/cpress/20081002/ca_pr_on_fo/nfl_dolp...

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Evolution is complete: so where do we go from here?

Daily TelegraphThe process turns on differences: in genes themselve, and on natural selection - on inherited variation in the ability to copy them. Isolation helps changes to build up and, in time bears, Bushmen and Britons evolve from a common ancestor. Human ... http://www.telegraph.co.uk/earth/main.jhtml?xml=/earth/2008/...

Evolution Doesn't Work That Way

PravdaAlthough Darwin was partially correct by showing that natural selection occurs in nature, the problem is that natural selection itself is not a creative force. Natural selection is a passive process in nature. Natural selection can only "select" from ... http://english.pravda.ru/science/earth/06-10-2008/106522-Evo...

Mysterious DNA survives eons of evolution

MSNBCThe fact that these segments haven't been weeded out by natural selection implies that they serve an important function in mammals. Yet mice in the lab bred to lack four of these DNA strands appear healthy and don't seem to be missing any vital genes ... http://www.msnbc.msn.com/id/27102839/

Former Chairman Alex Soto Discusses Important Role of Independent ...

Insurance News NetSoto is president and CEO of InSource, Inc. in Miami, Fla. and served as chairman of the Big “I” from 2006 to 2007.  Prior to his selection to this leadership post, Mr. Soto was chairman of IIABA’s Communications Committee, Natural Disaster ... http://www.insurancenewsnet.com/article.asp?a=top_news&id=99...

Nick Harris: Billionaires and bad debts mean 'financial fair play' is ...

The IndependentThat's natural selection for you). Leeds? (Whoops again, and they didn't even win anything). To understand the different debt situations, even just within England, a housing analogy is useful. Roman Abramovich came up trumps on the (oil ... http://www.independent.co.uk/sport/football/news-and-comment...

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natural selection definition |Dictionary.com

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Natural selection

Natural selection: The basics Darwin's most famous idea, natural selection, explains much of the diversity of life. Learn how it works, explore examples, and find out how to avoid ... http://evolution.berkeley.edu/evolibrary/search/topicbrowse2...

Natural selection

Natural selection. Natural selection is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift. Darwin's grand idea of evolution by natural ... http://evolution.berkeley.edu/evolibrary/article/0_0_0/evo_2...
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Ethical Concerns Surrounding Gender SelectionModern science now allows parents to choose whether they want a boy or a girl. Lisa Sigell reports.Windows Media - Video

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Answers for Natural Selection

Guitarist4333How does Natural Selection lead to adaptation within a population?Guitarist43331. When the environment changes, some variations of characteristics might give some individuals a better chance to survive than other individuals without that variation. In natural selection, the me...unclassifiedpeachesWhat evidence is there of natural selection?unclassifiedpeaches1. structural evidence such as adaptations, homologous structures, and analogous structures 2. mimicry and camouflage 3. symbiotic relationshipsToni EWhat are the main factors that are required for natural selection to occur?Toni Ethis is from wikipedia Artificial selection is the intentional breeding of certain traits, or combinations of traits, over others. It was originally defined by Charles Darwin in contrast to the proce...mustangmomWhat is a quick activity to demonstrate natural selection to a HS biology class?mustangmomGet a bag of candy corn, the yellow, orange and white kind. Get a bag of M & M's mulitcolored. Count how many of each color of M & M's to start. Dump them all in together and mix in a shallow conta...ImBringinSexyBackInMyFuzzyHatWhat is an archipelago and how does it relate to natural selection?ImBringinSexyBackInMyFuzzyHatomg omg omg.............Idk = [
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