miércoles, 21 de diciembre de 2011

The creation of genetically modified animals the altering of an animal?s genetic codes to make sure that it displays only the expected characteristics and do not possess any undesirable qualities. This is done by the addition of genes from other species, the deletion of undesirable genes or modifying the existing genes to bring certain traits forward. Though chimeras and cross breeds have been pretty much a staple in science fiction novels, nowadays, it is a wide known fact. The popular techniques to create genetically modified animals include pro-nuclear micro-injection, embryonic stem-cell manipulation and nuclear transfer. Genetically modified animals such as rabbits, cows, goats, pigs, rats, mice and cats are created with these techniques to arm them to serve their expected purposes.There are many benefits that come from the creation of genetically modified animals. For instance, by the manipulation of their genes, scientists are able to study the functions of genes, gene tic diseases and how to treat genetic mutations such as cancer and other illnesses. Most of these genetically modified animals are used for the economic production of food items that are rich in rare nut essential nutrients. Genetically modified animals are also created with the development of the medical sciences as well. For instance, some animals can be genetically manipulated to grow replacement organs and tissues for humans and to harvest other medically valuable components to battle certain diseases not to mention .The major disadvantage is the speculation that these pesticides and resilient genes can pass on to consumers to create u desirable conditions for them such as allergies, diseases and cancer. Though any of these effects are yet to be proven or actually reported, genetically engineered food continues to stock up super market aisles and to be purchased over natural foods. Nowadays, over 65 percent of food items are genetically engineered food or made with popul ar genetically enhanced components such as corn, rapeseed (canola) or soy. Even though reports exist that laboratory animals that have been fed genetically engineered food have suffered considerable organ damage and illnesses, humans are apparently immune to these effects. But the speculation hasn?t died that it may affect the future generations and their genetic makeup.

Though genetic engineering techniques such as gene splicing of different species or cloning are generally frowned upon by the public as unethical practices that are against the rules of nature, these very procedures can save certain animals from going extinct and from becoming endangered due to manmade effects. The main dangers associated with genetically modified animals and the techniques used to create them are the risks of misuse and the disruption of natural genetic information. Since most modified farm animals are released out to nature, a lot of people are worried that they may cause disruption to the eco system and the delicate balance of nature with their un-naturally enhanced characteristics. It is considered that with the large amount of genetically modified animals and plants in the world today could lead to the acceleration of genetic erosion, harmful and dangerous mutations as well as the creation of all new diseases that could pose a threat to mankind

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