Today's technology develops so quickly that many impossible things become true; the cloning technology is the example. What is cloning? Cloning is a process used to create an exact copy of a mammal by using the complete genetic material of a regular body cell. Different from the common propagate, cloning need only one cell and without sex. In 1997, the great news shocked the whole world that the British scientists created a lamp named Dolly from a single cell, miraculously; the cell had been taken from the udder of adult sheep, which show the first cloning experiment was successful.
The history of cloning
About the cloning history, we trace back to 400 million years BC, the plants could clone themselves but not to long. The human found the cloning 200 years ago, the first person who did the cloning experiment is a German biologist named Han Spermann, he uses the egg white to clone chicken in 1938 but it was failed. Until 1981, Kal Illmensee and Peter Hoppe report that they clone......
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