Beginning of Essay
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 a ....

Middle of Essay
.... into tadpoles. The tadpoles, however, never matured into frogs. The Scottish researchers have failed many times with sheep cells before their success, but the task was perfected and accomplished. Now this accomplishment has made it possible for the cloning of almost any mammal, including humans. To the average person, exactly how the technique works is unclear. Scientist predicted that by making cells dormant and bringing them close to death, something happens to break the chemical locks (barriers) that keep most of the genes inactive. The mammary cell is inserted into an unfertilized sheep egg cell that has already had all of its own genetic mate ....