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Genetically modified organism

From Simple English Wikipedia, the free encyclopedia

A genetically modified organism (GMO) is an organism whose genetic material has been altered using genetic engineering techniques.[1]

Organisms that have been genetically modified include micro-organisms such as bacteria and yeast, insects, plants, fish, and mammals. GMOs are the source of genetically modified foods, and are also widely used in scientific research and to produce goods other than food.


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  • Modern genetic engineering began in 1972 when United States Biochemists Herbert Boyer and Stanley Cohen used enzymes to cut a bacteria plasmid and insert another strand of DNA in the gap. Both bits of DNA were from the same type of bacteria, but this milestone, the invention of recombinant DNA technology, offered a window into the previously impossible—the mixing of traits between totally dissimilar organisms.[2]


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  • Allan Maxam and Walter Gilbert developed a DNA sequencing method based on chemical modification of DNA and subsequent cleavage at specific bases.[3]

Although Maxam and Gilbert published their chemical sequencing method two years after the ground-breaking paper of Sanger and Coulson on plus-minus sequencing,[4] Maxam–Gilbert sequencing rapidly became more popular, since purified DNA could be used directly, while the initial Sanger method required that each read start be cloned for production of single-stranded DNA. However, with the improvement of the chain-termination method (see below), Maxam-Gilbert sequencing has fallen out of favour due to its technical complexity prohibiting its use in standard molecular biology kits, extensive use of hazardous chemicals, and difficulties with scale-up.[5]


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  • DNA Plant Technology receives approval from the US Department of Agriculture to field test its so-called "Fish tomato",[6] but the plant is never successfully commercialized. The creation of a genetically modified plant, with a fish transgene designed for human consumption did not go down well with the public.[7]
  • The first modern recombinant crop approved for sale in the U.S., in 1994, was the FlavrSavr tomato, which had a longer shelf life. However, higher costs and same bland flavor as conventional tomatoes led to it losing money and disappearing from the shelves.


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  • The first genetically modified fish Glofish is introduced into the market in the U.S.

The first genetically modified black, blue and red rose made in the lab.[9]


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  • Monsanto corporation through its Indian subsidiary Mahyco unsuccessfully attempted to introduce Bt brinjal, which was put on hold due to citizen organizing against approval for sale in the country.
  • Amflora was approved for industrial applications in the European Union by the European Commission.[10] Amflora is a genetically modified potato the result of two decades of research efforts.[11] The Amflora potato is selected for its special starch properties used in paper making and adhesives.


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  1. Ehrenberg, Rachel (Feb 5, 2016). "'GMOs' isn't a four-letter word, but it is hard to define". Science News. Archived from the original on April 12, 2016. Retrieved May 4, 2016.
  2. Cohen S; Chang A.; Boyer H. & Helling R. 1973. Construction of biologically functional bacterial plasmids in vitro. Proceedings of the National Academy of Sciences of the United States of America 70 (11): 3240–3244. [1]
  3. Maxam AM, Gilbert W (February 1977). "A new method for sequencing DNA". Proc. Natl. Acad. Sci. U.S.A. 74 (2): 560–4. Bibcode:1977PNAS...74..560M. doi:10.1073/pnas.74.2.560. PMC 392330. PMID 265521.
  4. Sanger F. Determination of nucleotide sequences in DNA Archived 2013-12-07 at the Wayback Machine. Nobel lecture, 8 December 1980.
  5. Graziano Pesole; Cecilia Saccone (2003). Handbook of comparative genomics: principles and methodology. New York: Wiley-Liss. p. 133. ISBN 0-471-39128-X.{{cite book}}: CS1 maint: multiple names: authors list (link)
  6. "Permit Number 91-079-01 tomato; antifreeze gene; staphylococcal Protein A" (PDF).
  7. McHughen, Alan (22 June 2000). Pandora's Picnic Basket : The Potential and Hazards of Genetically Modified Foods: The Potential and Hazards of Genetically Modified Foods. Oxford University Press, UK. ISBN 978-0-19-850674-4 – via Google Books.
  8. NAIK, GAUTAM (September 21, 2010). "Gene-Altered Fish Closer to Approval". Wall Street Journal. Retrieved June 20, 2019.
  9. Demetriou, Danielle (October 31, 2008). "World's first blue roses after 20 years of research". The Daily Telegraph. London.
  10. "European Commission approves Amflora starch potato - BASF - the Chemical Company - Corporate Website". Archived from the original on 2012-12-06. Retrieved 2013-07-14.
  11. Rosenthal, Elisabeth (July 24, 2007). "A genetically modified potato, not for eating, is stirring some opposition in Europe". The New York Times.