Cloning of Animals On Sunday, February 23, 1997, Scottish researchers broke one of nature's greatest laws by cloning a lamb from a single cell of an adult ewe. This breakthrough opens the door to the possibility for the cloning of other mammals including humans. This remarkable achievement is being looked at as a great advancement in animal agriculture. But this achievement could lead to ethical questions of standard. Researchers lead by Ian Wilmut of the Roslin Institute in Midlothian, Scotland, showed that a fully differentiated cell from the mammary tissue of an ewe could be manipulated in such a way as to produce a genetically identical copy of the animal that the DNA was acquired. Scientist long believed that once a cell became differentiated, that most of its approximately 100,000 genes shut off. Only a few genes remained active to allow the....

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