Best Bodyweight Leg Exercises For Strength

Best Bodyweight Leg Exercises For Strength

A Genetic engineering involves altering the characteristics of a plant, animal, or microorganism by adding, rearranging, or replacing genes in its DNA; the result is a genetically modified (GM) organism. New DNA may come from related species of organisms or from entirely different types of organisms. Many GM crops are already grown in the United States: About 85% of the current U.S. soybean crop and more than 75% of the cotton crop has been genetically modified. Products made with GM organisms include juice, soda, nuts, tuna, frozen pizza, spaghetti sauce, canola oil, chips, salad dressing, and soup.

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The potential benefits of GM foods cited by supporters include improved yields overall and in difficult growing conditions, increased disease resistance, improved nutritional content, lower prices, and less use of pesticides. Critics of biotechnology argue that unexpected effects may occur: Gene manipulation could elevate levels of naturally occurring toxins or allergens, permanently change the gene pool and reduce biodiversity, and produce pesticide-resistant insects through the transfer of genes. In 2000, a form of GM corn approved for use only in animal feed was found to have commingled with other varieties of corn and to have been used in human foods; this mistake sparked fears of allergic reactions and led to recalls. Opposition to GM foods is particularly strong in Europe; in many developing nations that face food shortages, responses to GM crops have tended to be more positive.

In April 2000, the National Academy of Sciences released a report stating that there is no proof that GM food on the market is unsafe but that changes are needed to better coordinate regulation of GM foods and to assess potential problems. Labeling has been another major concern. Surveys indicate that the majority of Americans want to know if their foods contain GM organisms. However, under current rules, the FDA requires special labeling only when a food’s composition is changed significantly or when a known allergen is introduced. For example, soybeans that contain a gene from a peanut would have to be labeled because peanuts are a common allergen. The only foods guaranteed not to contain GM ingredients are those certified as organic.

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