[BojanaL]

So in my view mutation of genetic material in nature for improvement of species is natural genetic engineering and what we do by using technology is artificial genetic engineering! In short, nature has been using mutation as a tool to make certain changes in DNA of all living organism for better survival of different species of the earth.
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Thank you very much for the explanation provided. I agree that genetic engineering is "stolen" from the nature (as so many other natural phenomena) and that "artificial genetic engineering" is way better term to distinguish engineering made by nature and one made by man. Keep on being so well informed and thrilled about nature and its wonders.