List of GMO-free Foods & allergies and genetically modified food
12 years ago
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Is hybrid corn 'genetically modified'? Is there a list?
Comments (14)Steve I've seen some people wondering if the BT crops are what are decimating bee populations. Here's one discussion. Walter Haefeker, the German beekeeping official, speculates that "besides a number of other factors," the fact that genetically modified, insect-resistant plants are now used in 40 percent of cornfields in the United States could be playing a role. The figure is much lower in Germany - only 0.06 percent - and most of that occurs in the eastern states of Mecklenburg-Western Pomerania and Brandenburg. Haefeker recently sent a researcher at the CCD Working Group some data from a bee study that he has long felt shows a possible connection between genetic engineering and diseases in bees. The study in question is a small research project conducted at the University of Jena from 2001 to 2004. The researchers examined the effects of pollen from a genetically modified maize variant called "Bt corn" on bees. A gene from a soil bacterium had been inserted into the corn that enabled the plant to produce an agent that is toxic to insect pests. The study concluded that there was no evidence of a "toxic effect of Bt corn on healthy honeybee populations." But when, by sheer chance, the bees used in the experiments were infested with a parasite, something eerie happened. According to the Jena study, a "significantly stronger decline in the number of bees" occurred among the insects that had been fed a highly concentrated Bt poison feed. According to Hans-Hinrich Kaatz, a professor at the University of Halle in eastern Germany and the director of the study, the bacterial toxin in the genetically modified corn may have "altered the surface of the bee's intestines, sufficiently weakening the bees to allow the parasites to gain entry - or perhaps it was the other way around. We don't know." Of course, the concentration of the toxin was ten times higher in the experiments than in normal Bt corn pollen. In addition, the bee feed was administered over a relatively lengthy six-week period. Kaatz would have preferred to continue studying the phenomenon but lacked the necessary funding. "Those who have the money are not interested in this sort of research," says the professor, "and those who are interested don't have the money." Here is a link that might be useful: Are GM Crops Killing Bees?...See MoreIs cross-breeding even comparable to genetically modified?
Comments (32)"There is no method of cross breeding that can insert bacteria DNA into a vegetable plant like transgenic corn and cotton has" You've clearly never heard of retroviruses, which do exactly that. "GMO crops then are no longer technically corn or soy or sugar beets but mutants" Mutation is the single most important thing in evolution, and the adaptation of life (which is a two part process - mutation expands the genome, natural selection winnows it down to what is useful). It's not a bad thing. Genetic Engineering is also DRASTICALLY more predictable than traditional crossbreeding. You want to pull the genes from a Geneva roostock that code for fireblight resistance and put it in a different apple? Trivial. You want to cross one of the geneva lines with a Braeburn apple and try to get an apple that tastes right and isn't very susceptible to fireblight? Almost impossible. Predictability also leads to safety. You want to try and get a resistance gene from a wild solanum into a tomato? Easy with gene splicing. Via traditional breeding? You're very likely to end up with something that will kill you if you eat it....See MoreAbout Genetically Engineered foods
Comments (32)Oh come on Marcia that just isn't fair. I was never implying that anyone was stupid and I worded that very carefully so no one would think that I did. If anyone else feels that I was calling them stupid I am sorry and that was not my intention. I do however feel that the subject of genetic engineering is getting an unjustified bad reputation. Since you have brought up education I will reveal mine. I have a BS in bioinformatics and computational biology with minors in computer science, statistics and chemistry. I am currently working on my MS in biotechnology. There is more than a few people eating GM crops currently and they aren't dying. Many people mention that the long term effects of GM produce should be studied and I agree with that and if they find a reason to remove the products they will. But at this current time I see no reason to have a concern. Tests are performed on the plants to look for toxic substances and allergens what more do you need. If anyone doesn't want to eat GM crops I am sure they can greatly reduce their intake of them by shopping at local farm stands. I have read a lot of the remarks against genetic engineering and they are all full of unsubstantiated claims and misleading experiments. Marcia, since you have studied biology I am sure you are familiar with the ames test. The ames test wasn't around in the time of cyclamate, our technology has come a very long way since then. Before the ames test scientists had to feed mice a lot of the compound and then dissect the mice and examine every inch of tissue for cancer. Now with the ames test all you need to do put the compound on a special agar plate and incubate for less than 2 days. And there are other countless advances to ensure safety. Even if the genes were able to somehow get into every organism within a species knocking out genes is not even as hard as putting them in. If you are interested here is one article about RNA interference . Also if you have taken genetics you know that you would never see the gene taking over a population it would reach Hardy-Weinberg equilibrium within the population. Also here is the FDA position on labeling genetically engineered food: Labeling Issues FDA has received many inquiries asking about the labeling of genetically engineered foods. Congress has provided FDA a limited basis on which to require labeling. Generally, for FDA to require labeling there must be something tangibly different about the food. In general, this means most genetically engineered foods will not need special labeling because they will be similar to traditionally bred varieties. But there are exceptions, such as when a gene from a food that could cause an allergic reaction--peanuts, for example--is transferred into another food. In that case, FDA policy places the burden on the developer. "The food will have to be labeled so everyone will know it contains an allergen, unless the developer can show scientifically that the allergenicity has not been transferred," says Laura Tarantino, Ph.D., deputy director of FDA's Office of Premarket Approval. Fortunately, the products in front of us right now don't raise those issues." FDA also will require labeling if a company uses genetic engineering techniques to change a food's composition significantly. For example, when one manufacturer modified canola to produce increased levels of lauric and myristic acids in the seed oil, FDA agreed that the common or usual name for this oil would be "laurate canola oil" in order to distinguish it from traditional canola oil....See MoreWhich of our food crops are mostly GMO?
Comments (33)Natural gas can power farm equipment...and it seems we have a lot...even though most of it is being shipped off-shore into the world market rather than keeping it around here...which is a testament to my natural gas heating bill not going down even though they're pumping more out of the US than any other place in the world. Sigh. There are gains being made in runs-on-electric farm equipment (grid electricity), but most of that is in small cultivators and small tractors which aren't large harvesters or large scale plowing machines. China is a heavy innovator in this market, but larger manufactures like J.Deere are developing prototypes (diesel-hybrids mostly)....See More- 12 years agolast modified: 11 years ago
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