Although this procedure had been attempted for decades, Dr.
Ian Wilmut and colleagues at the Roslin Institute in Scotland were able to create conditions that allowed the adult cell nucleus to reprogram its DNA, enabling their success with Dolly.
Many people who don't support cloning say that its cons are: "Serious health risks are involved.", "Cloning could, someday, be used for warfare or slavery.", and finally, "Children whom have been cloned could potentially be looked down upon, or looked up to, causing lack of acceptance and individuality.".
Pros: Cloning is a technology that would allow infertile couples to have a genetically related child.
Each cloned organism, or group of organisms, is composed with the exact genetic material as the original organism(s).
Genetic material is made up of genes, the parts of a cell that determine characteristics in living things, (worldbook.com).
In cloning, we are requiring that a differentiated cell (e.g.
udder cell) reprograms or resets its genetic information so that it acts as a fertilized egg.
Success with the technique, however, has not been easy in these animals (less than 2% efficiency) and barely achievable in other species such as chickens, monkeys and dogs.
The significance of the first cloned mammal, Dolly, was that for the first time cloning was achieved from an adult (differentiated) cell.