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However, with the successful cloning of the sheep "Dolly" in 1997, it became evident that sooner or later, scientists might be able to clone human beings, too.
Though an individual manufactured by cloning would posses the same genetic sequence as the person whose nucleus was used other factors also substantially affect the development of an individual.
An individual’s development may be affected by structural and metabolic influences of the enucleated egg and the differentiated cell, as well as influences during gestation.
There are huge financial profits to be made by developing genetically engineered animals that secrete chemicals and proteins of value to humans, such as cows or goats that produce human blood clotting agents in their milk.
Without cloning, scientists must genetically manipulate each individual animal, which results in very low success rates.
The desire of some genetic engineers to gain control over the innermost workings of animals fueled the further development of cloning technology.
It is out of this context that some people are now attempting to justify human cloning.
However, with cloning comes the possibility that scientists need only perfect one animal to clone an entire herd from that success.
The goal is not to copy everything about the animal, only the property that has been engineered into it.
Other false views persist in the language of cloning, namely equating cloning with reproduction, and equating cloning with the birth of identical twins.
A cloned individual would be one made by scientists, using a pre-existing genetic configuration, without the joining of gametes from two people.