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Recombinant DNA technology is a way of modifying the genes of various life forms including plants and animals. The modification of genes of plants and animals has been beneficial to humans in many ways. Genetically modified bacteria are used in the production of substances essential for the treatment of many serious aliments some of which are diabetes, haemophilia and hormonal disorders. The genetic modification of plants has created plants with an increased yield, that are resistant to herbicides and which are able to defend themselves from insects without the use of insecticides.
The disadvantages of genetic modification include the destruction of native species in the environment the genetically modified species are introduced in. As the new species have not evolved due to the process of natural selection they are more vulnerable themselves and could be eliminated once they have caused serious damage to the species they were introduced to replace. The genetic modification of bacteria could lead to an accidental creation of super bugs that cannot be controlled either by natural forces or drugs created by humans. This makes it essential that genetic modification is used after a lot of research has been done to evaluate its effects on the entire environment.
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