Genetically modified food

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Genetically modified foods (GM foods), also known as genetically engineered foods (GE foods), or bioengineered foods are foods produced from organisms that have had changes introduced into their DNA using various methods of genetic engineering. Genetic engineering techniques allow for the introduction of new traits as well as greater control (molecular-level insertion with greater predictability and speed) over traits when compared to previous methods, such as selective breeding and mutation breeding. The discovery of DNA and the improvement of genetic technology in the 20th century played a crucial role in the development of transgenic technology. In 1988, genetically modified microbial enzymes were first approved for use in food manufacture. Recombinant rennet was used in several countries in the 1990s. Commercial sale of genetically modified foods began in 1994, when Calgene first marketed its later-withdrawn Flavr Savr delayed-ripening tomato. Most food modifications have primarily...

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