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...h behaved differently when a beam of light was sent through them . By separating different sides of crystals, the left and the right, into two pile and sending light through it he showed that they were mirror images of each other as were the paratartrate and the tartrate. Based on this research he formulated the law which states that asymmetry differentiates the organic world from the mineral world. For this often used to make improved goods with greater quality or appeal or for medical reasons. Genetic engineering is performed by adding recombinant DNA to the DNA of an organism. Organisms that have been altered in this fashion are called transgenic. DNA recombination can occur naturally in nature. For example during crossing over in the process of meiosis DNA is exchanged. It also happens during the fusing of an egg and sperm in sexual reproduction. Another form of DNA recombination is when a virus enters another organism. The viral DNA is taken up by the cell’s DNA and the host is programmed to produce new viruses. This technology of genetic engineering can be applied to ma...