Report a correction
Dolly the sheep
The significance lay in the principle: a cell's specialisation is reversible. That led directly to induced pluripotent stem cells a decade later, which allow stem cells to be made from a skin sample without embryos — and so sidestep much of the ethical dispute cloning itself provoked. Dolly also prompted the first national bans on human cloning.
Factual errors are corrected without argument once documented. What you send is read by a person and checked against sources — nothing changes automatically. See the editorial policy.