Cloning is a process in which genetically identical copies of biological matter are created by nonsexual means. Clones are made up of organisms that are exact genetic copies. Every piece of their DNA is identical. Cells, genes, tissues and entire organisms can be created through cloning. Aside from cloning performed in a laboratory, clones occur naturally. Identical twins are just one natural example of cloning. Cloning has been used for many years. The first examples of cloning were associated with plants. The simple act of cutting a plant and growing a new one from the original is an act of cloning. In the early 1950s, scientists successfully cloned a tadpole (Zabel 4). To the average person the term cloning seems trivial, as if there could only be one type. When in reality today there are three main types of cloning being tested and tested. The first type of cloning, known as molecular cloning, focuses on creating identical copies of DNA molecules. This type of cloning is also known as genetic cloning and/or recombinant DNA technology. The second type of cloning is called organism cloning, also known as reproductive cloning. Organismal or reproductive cloning involves creating an identical copy of an entire organism. This is the type of cloning that was successfully used in 1996 to create "Dolly the Sheep". Finally, the third type is defined as therapeutic cloning. Therapeutic cloning is by far the most controversial type of cloning, as it involves the cloning of human embryos for the production of stem cells (Zabel 1). The controversy here revolves around the fact that; A. Human embryos are actually used for such purposes and b. the fact that these embryos are and...... middle of paper...... Phil for Humanity. Np, nd Web. March 23, 2014. February 11, 2014Mueller, Tom. "Cloned species". — National Geographic magazine. Np, May 2009. Web. 14 April 2014.Naik, Gautam. “Experiment brings human cloning one step closer.” The Wall Street Journal. Dow Jones & Company, May 15, 2013. Web. February 11, 2014. Nelson, Lawrence, and Barbara Mackinnon. “Ethics of Human Cloning and Stem Cell Research.” Ethics of human cloning and stem cell research. Np, nd Web. April 12, 2014. Tierney, Giovanni. "Are scientists playing God? It depends on your religion." The New York Times. The New York Times, November 19, 2007. Web. April 14, 2014. Wickman, Gary. “Potential Dangers of Human Cloning.” Potential dangers of human cloning. Health Guide and Web. February 11, 2014Zabel, Gary. “Fact Sheet on Cloning.” Doegenomes.org. About the Human Genome Project, 2007. Web. 18 February. 2014.