Genetic engineering of animals has been practiced throughout the last century, yet applying it to humans is a controversial debate: How beneficial would cloning really be for humanity? The general idea of ​​clones may resemble the image of two symmetrical organisms. However, the identical characteristics would consist only of the corresponding nuclear genes. On July 5, 1997, cloning had its decisive turning point. The announcement by Ian Wilmut, Keith Campbell and their colleagues revolutionized medical and scientific history. At the Roslin Institute in Midlothian in Scotland the team managed to give birth to a cloned sheep called Dolly. The process for this is called “somatic cell nuclear transfer” (SCNT). This type of cloning is called reproductive cloning. It is used to generate an organism that has the same DNA as another organism. The medical procedure begins with the enucleation of a donated egg. A cell from the organism that is to be cloned is collected and inserted into the donor's egg. The fusion is done using chemicals or an electric current to stimulate it so it can develop into an embryo. After reaching a specific stage it is transferred to the uterus of a female host where it can develop through birth. To create Dolly, 277 embryos were needed to reach embryogenesis (the embryo's development stage). Even though scientists have succeeded in cloning a sheep, many think it is only a matter of time before they try to clone humans. Therefore, many celebrities began to copyright their cells, fearing that someone might create a being identical to them. But does this really mean that humans could start copying every person in the world? What would be the consequences of genetic manipulation? Human Clon...... at the center of the article ...... on D. Levine"The ethics of human cloning"By Leon Kass, James Q. WilsonLivejournal "Independent Minds on Panayiotis Zavos”URL available online: http://www.livejournal.com/integration/independent/US Department of Energy Genome Programs. “Cloning” URL available online: http://genomics.energy.govUniversity of Utah, Genetic Sciences Learning Center genetics." URL available online: http://learn.genetics.utah "Molecular Therapeutics: 21st Century Medicine" by Pamela Greenwell, Michelle McCulley "Genetic Engineering: Manipulating the Mechanisms of Life" by Russ HodgeAMA American Medical Association "Cloning human". URL available online: http://www.ama-assn.org/“Cloning: Dolly the Sheep” by Teresa Wimmer “Animal Cloning: The Science of Nuclear Transfer” by Joseph Panno