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Genes correspond to regions within DNA, a molecule composed of a chain of four different types of nucleotides—the sequence of these nucleotides is the genetic information organisms inherit. DNA naturally occurs in a double stranded form, with nucleotides on each strand complementary to each other. Each strand can act as a template for creating a new partner strand—this is the physical method for making copies of genes that can be inherited.

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Wikipedia About Genetically

DNA%20Overview2.png

Genes correspond to regions within DNA, a molecule composed of a chain of four different types of nucleotides—the sequence of these nucleotides is the genetic information organisms inherit. DNA naturally occurs in a double stranded form, with nucleotides on each strand complementary to each other. Each strand can act as a template for creating a new partner strand—this is the physical method for making copies of genes that can be inherited.

The sequence of nucleotides in a gene is translated by cells to produce a chain of amino acids, creating proteins—the order of amino acids in a protein corresponds to the order of nucleotides in the gene. This is known as the genetic code. The amino acids in a protein determine how it folds into a three-dimensional shape; this structure is, in turn, responsible for the protein's function. Proteins carry out almost all the functions needed for cells to live. A change to the DNA in a gene can change a protein's amino acids, changing its shape and function: this can have a dramatic effect in the cell and on the organism as a whole.

Although genetics plays a large role in the appearance and behavior of organisms, it is the combination of genetics with what an organism experiences that determines the ultimate outcome. For example, while genes play a role in determining a person's height, the nutrition and health that person experiences in childhood also have a large effect.

History

main: History of genetics

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Although the science of genetics began with the applied and theoretical work of Gregor Mendel in the mid-1800s, other theories of inheritance preceded Mendel. A popular theory during Mendel's time was the concept of blending inheritance: the idea that individuals inherit a smooth blend of traits from their parents. Mendel's work disproved this, showing that traits are composed of combinations of distinct genes rather than a continuous blend. Another theory that had some support at that time was the inheritance of acquired characteristics: the belief that individuals inherit traits strengthened by their parents. This theory (commonly associated with Jean-Baptiste Lamarck) is now known to be wrong—the experiences of individuals do not affect the genes they pass to their children. Other theories included the pangenesis of Charles Darwin (which had both acquired and inherited aspects) and Francis Galton's reformulation of pangenesis as both particulate and inherited.

Mendelian and classical genetics

The modern science of genetics traces its roots to Gregor Johann Mendel, a German-Czech Augustinian monk and scientist who studied the nature of inheritance in plants. In his paper "Versuche über Pflanzenhybriden" ("Experiments on Plant Hybridization"), presented in 1865 to the Naturforschender Verein (Society for Research in Nature) in Brünn, Mendel traced the inheritance patterns of certain traits in pea plants and described them mathematically. (in English in 1901, J. R. Hortic. Soc. 26: 1–32) English translation available online Although this pattern of inheritance could only be observed for a few traits, Mendel's work suggested that heredity was particulate, not acquired, and that the inheritance patterns of many traits could be explained through simple rules and ratios.

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News about Genetically

Alzheimer's Society Comment On New Research Into HDAC2 And Memory, To Be Published In Nature

Medical News TodayThis exciting research may help our understanding of how memory works. 'Scientists showed that a specific gene is involved in memory and that its actions can be enhanced in genetically modified mice. Alzheimer's is much more than just memory loss; it is a physical disease of the brain that leads to the death of nerve cells.http://www.medicalnewstoday.com/articles/149442.php

Australian OGTR: DIR 094 - Limited and controlled release of wheat and barley genetically modified for enhanced ...

SeedQuestAustralia’s gene technology regulatory system is designed to protect the health and safety of people and the environment by identifying risks posed by, or as a result of, gene technology and managing those risks.http://www.seedquest.com/News/releases/2009/may/26107.htm

Cabinet approves procedures for issuing permits for transit of genetically modified organisms not registered in Ukraine

KYIV PostThe Cabinet of Ministers has approved procedures for issuing permits for transit of genetically modified organisms that are not registered in Ukraine.http://www.kyivpost.com/nation/41028

Skin color linked to nicotine dependence

UPIUNIVERSITY PARK, Pa., May 11 (UPI) -- Higher concentrations of melanin -- the color pigment in skin and hair -- may indicate increased susceptibility to nicotine dependence, U.S. researchers say.http://www.upi.com/Health_News/2009/05/11/Skin-color-linked-...

Seeds of truth

Online JournalI have learned over the past decade if I want to know what’s really going on in the United States, I have to cruise through the foreign media to see what’s creating a furor or causing a stink.http://onlinejournal.com/artman/publish/article_4684.shtml

News about Genetically

Africans most genetically diverse people

PresstvWhile Africa has been known as the continent where modern humans originated, a new study finds Africans to be the most genetically diverse people in the world. Scientists say all humans are the direct descendents of people living about 200,000 years ... http://www.presstv.ir/detail.aspx?id=93568§ionid=3510212

Monsanto Loses Bid to Lift German Ban on Altered Corn (Update2)

BloombergMay 5 (Bloomberg) -- Monsanto Co. , the world’s largest seed producer, lost an emergency court request to lift a German ban on genetically modified corn. Germany’s prohibition on a strain of genetically modified corn made by Monsanto was ... http://www.bloomberg.com/apps/news?pid=20601100&sid=aHdiz1pY...

Canada: 1st pigs found with new swine flu virus

Seattle TimesCanadian scientists say they are the first to genetically sequence the swine flu virus, a breakthrough they hope will help identify the origins of the virus and reveal how it spreads and mutates. Dr. David Butler-Jones, Canada's chief public health ... http://seattletimes.nwsource.com/html/nationworld/2009163788...

House bill eyes listing of genetically modified crops

Philippine Star OnlineMANILA, Philippines – A bill has been filed in Congress pushing for the registration of all genetically modified organisms (GMO) used by companies and other institutions in the country. The listing aims to give the consuming public a choice between ... http://www.philstar.com/Article.aspx?articleId=464480&public...

How to fix a phobia

Sydney Morning HeraldHowever, Victorian psychologist Amy Wallis says there is evidence to suggest that phobias can be "genetically influenced". "We have fears for a reason: protection of life and survival," Wallis says. "We all have that possibility to be fearful of ... http://www.smh.com.au/lifestyle/lifematters/how-to-fix-a-pho...

Search results for Genetically

Genetically Modified Food - News - GM Food - GM Crops

Genetically Modified Food - News - GM Food - GM Crops ... Genetically Modified Food - News http://www.gmfoodnews.com/ Your source for 3000+ news stories about Genetically Modified ... http://www.gmfoodnews.com/

Genetically Engineered Foods Essays and Articles at eNotes

Genetically Engineered Foods essays, articles, and viewpoints ... The significance of genetic engineering is expressed in the words of Suzanne Wuerthele, an Environmental ... http://www.enotes.com/genetically-engineered-article

genetically - definition of genetically in the Medical dictionary - by ...

genetics /ge·net·ics/ (jĕ-net´iks) the study of heredity. biochemical genetics the science concerned with the chemical and physical nature of genes and the mechanism by which ... http://medical-dictionary.thefreedictionary.com/genetically

Genetically engineer legal definition of Genetically engineer ...

The human manipulation of the genetic material of a cell. Genetic engineering involves isolating individual DNA fragments, coupling them with other genetic material, and causing ... http://legal-dictionary.thefreedictionary.com/Genetically+en...

Genetically-modified legal definition of Genetically-modified ...

The human manipulation of the genetic material of a cell. Genetic engineering involves isolating individual DNA fragments, coupling them with other genetic material, and causing ... http://legal-dictionary.thefreedictionary.com/Genetically-mo...

Wikipedia results for Genetically

Genetically modified organism - Wikipedia, the free encyclopedia

A genetically modified organism (GMO) or genetically engineered organism (GEO) is an organism whose genetic material has been altered using genetic engineering techniques.http://en.wikipedia.org/wiki/Genetically_modified_organisms

Genetically modified food - Wikipedia, the free encyclopedia

Genetically modified (GM) foods are food items that have had their DNA changed through genetic engineering. Unlike conventional genetic modification that is carried out through ... http://en.wikipedia.org/wiki/Genetically-modified_crops

Genetics - Wikipedia, the free encyclopedia

Offspring that are genetically identical to their parents are called clones. Eukaryotic organisms often use sexual reproduction to generate offspring that contain a mixture of genetic ... http://en.wikipedia.org/wiki/Genetically

Genetically modified food controversies - Wikipedia, the free ...

The genetically modified food controversy is a dispute over the advantages and disadvantages of genetically modified (GM) food crops.http://en.wikipedia.org/wiki/Genetically_modified_food_contr...

Genetically modified plant - Wikipedia, the free encyclopedia

Genetically modified plants are genetically engineered to contain one or more genes of another species. The aim is to introduce a new trait to the plant species which does not ... http://en.wikipedia.org/wiki/Genetically_modified_plant
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QUIRKY / JAPAN: Genetically modifie...

QUIRKY / JAPAN: Genetically modified mouse bred without fear of catsExperts in Japan have created a genetically modified mouse which has no fear of cats. Changes to the mutant rodent's brain mean mean smelling a feline predator will no longer...MPEG 4 - Video

Islands at Risk: Genetic Engineerin...

Islands at Risk: Genetic Engineering in HawaiiWhen the biotech industry decides to use the lands and people of Hawaii as its test guinea pig, local farmers, activists, researchers, and others speak out. This excellent...Flash - Video

Australia - Farming: Genetically mo...

Australia - Farming: Genetically modified profitsREPORT: After a decade-long drought, farmers in the southern Australian state of Victoria hope newly authorised GM crops will boost profits by 20%. Yet, local organic farmers...Windows Media - Video

Al Skogen Discusses Genetically Eng...

Al Skogen Discusses Genetically Engineered Food PrWatch biotech farmer Al Skogen discuss genetically engineered food pros in America. The Conversations About Plant Biotechnology Web site offers additional video discussions with...Flash - Video

Greenpeace - The dangers of Genetic...

Greenpeace - The dangers of Genetically Modified OGreenpeace - The dangers of Genetically Modified OrganismsFlash - Video

Answers for Genetically

Chris DGenetically modified food Question! How do they decide what food to use and what to change?Chris DGMO's basically depend on how easy it is to manipulate the plant's genetic code. For example, canola is pretty viable for transgenic therapy, but certain other plants are more resistant. Based on supp...scoobaSteveHow genetically similar are humans to fruits or other plants?scoobaSteveThis is a good question and it doesn't seem like anyone has answered it yet. It seems that we don't want to compare ourselves to plants. All I know is that among humans, there is about a 1% differ...AmandaIf you were to anaylze genetically modified foods?AmandaSounds like a really good paper. I know that genetically modified foods are used becuase it is better for the economy. I.E. one farm can produce 100 times more food as a farm could back in the 1960's ...nicoleWhat is so bad about genetically modified food?nicoleThe main concern people have is the ethical concern, and then we all have a really good reason to not trust that these foods are safe. Why? Because they are brought to us by Monsanto, which also answe...Rachy_BabyHow Is Kelly Holmes Genetically adapted to long distance running?Rachy_BabyI doubt that genes have much to do with it, training yes...suppose genes determine body shape
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