Dollie was cloned at the Roslin Institute in 1997. The idea was developed from part of a research in producing the milk from farm animals. The development of cloning technology led to new ways to produce medicine and improving the understanding of genetics.
Cloned animals can be used to carry human traits that could lead to new developments in medicine. Also this could lead to human cloning, but this has not been legalized so far due to people's ethics. Although this process lead to a success in Dollie’s case, there