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Knock Knock Elizabeth Tan MP3

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Title:Elizabeth Tan - Knock Knock (Official Music Video)

Duration: 3:39

Quality:320 Kbps

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History of genetic engineering

Genetic modification caused by human activity has been occurring since around 12,000 BC, when humans first began to domesticate organisms. Genetic engineering as the direct transfer of DNA from one organism to another was first accomplished by Herbert Boyer and Stanley Cohen in 1972. The first genetically modified animal was a mouse created in 1974 by Rudolf Jaenisch. In 1983 an antibiotic resistant gene was inserted into tobacco, leading to the first genetically engineered plant. Advances followed that allowed scientists to manipulate and add genes to a variety of different organisms and induce a range of different effects. In 1976 the technology was commercialized, with the advent of genetically modified bacteria that produced somatostatin, followed by insulin in 1978. Plants were first commercialized with virus resistant tobacco released in China in 1992. The first genetically modified food was the Flavr Savr tomato marketed in 1994. By 2010, 29 countries had planted commercialized biotech crops. In 2000 a paper published in Science introduced golden rice, the first food developed with increased nutrient value.

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