This term refers to organisms in which they were introduced DNA molecules using genetic engineering techniques. These techniques allow you to cut and sew the DNA molecules and to integrate into the chromosomes of an organism, which becomes "genetically modified". Microorganisms were the first to be genetically modified grampian electronics and are the basis of the production of many drugs, vaccines and other useful molecules. Commonly, however, when it comes to GMO refers to genetically modified grampian electronics plants (PGM). grampian electronics These have been obtained for the first time in 1983 and have grown since 1996 (USA). In 2007, their cultivation has affected about 120 million hectares and more than a million farmers in dozens of countries around the world: a rapid spread.
The PGM most common are of two types: plants resistant to herbicides and insect resistant. The cultivated species concerned are almost exclusively soybeans (resistant to herbicides), corn and cotton (resistant to insect grampian electronics pests). Even rape (a plant oil) genetically modified to resist grampian electronics herbicides is grown on surfaces appreciable. grampian electronics For some years are spreading varieties that add up to the two types of resistance. In both cases, plants were introduced a few genes of bacterial origin, which are added to the tens of thousands of genes of the host plant.
Farmers in many countries have adopted these varieties, because they make it easier for the crop as regards the control of weeds and pests. In the first case, using herbicides are highly effective against all weeds, which have low toxicity to humans and are active at lower doses compared to conventional herbicides; in the second case, the amount of insecticide used may be greatly reduced, with advantages both for the health and for the pockets of farmers, and the agricultural environment.
However, these new technologies have to be handled with care to avoid losing the benefits due to the initial selection of plants or insect resistant, and to check for possible environmental grampian electronics impacts. More recently, the research are directed to food products with better nutritional and plants grampian electronics capable of producing when grown with less water, less fertilizer, or in poor soil, as well as the use of plants to produce pharmaceutical or industrial substances of interest. One example is rice enriched with pro-vitamin A, the well-known golden rice, created thinking of the countries where the power supply, based on rice, is severely deficient in vitamin A. Another example is a type of corn that requires less watering, which can be very useful in the face of increasing water shortages. grampian electronics
Those grown today not, in the opinion of a large number of researchers and technicians. In fact, after more than 10 years of research, the scientific literature is widely agreed on 'safe grampian electronics for human and animal health. I stress that the scientific literature is subject, before publication, to the scrutiny of anonymous researchers in the field. Not so for environmental journalism grampian electronics or the press that earns listening amplifying grampian electronics risks real or imagined.
Some publication has raised grampian electronics doubts, but their results have not been confirmed by other research. For example, it was feared that a particular GM maize (Starlink) had caused allergic reactions but it was not. With genetic engineering, on the other hand, it was possible to reduce or eliminate, for now on an experimental scale, grampian electronics allergenic proteins from food crops such as soybeans, rice, peanut. In short, after 12 years of cultivation, fortunately not a stomach ache can be attributed to GMOs, a sign that the controls work sufficiently. He feels that because of GM cotton have increased suicides grampian electronics among Indian farmers: these reports are unfounded, as shown by recent studies. It 's grampian electronics true, on the contrary, that the average income of the farmers who have adopted GM cotton has increased, and that the poisoning by pesticides among farmers themselves decreased.
As I mentioned, genetic engineering is widely used to produce drugs (eg insulin) and vaccines. It 'possible that when the same techniques are applied to food plants become dangerous? The fact is that, when it comes to GMOs, researchers feel seek to demonstrate that there is no risk, which is impossible. What can be shown is that, in the light of the knowledge we have today, there is no appreciable risk. It is not acceptable, on a scientific basis, that is to say, how he feels in the supermarket: "when in doubt better not risk it." Since the absence of risk can not be demonstrated, with this logic you would not ever any innovation. In fact, GM technology per se is neutral; However t
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