Dolly (5 July 1996 – 14 February 2003) was a female Finn-Dorset sheep and the first mammal that was cloned from an adult somatic cell. She was cloned by associates of the Roslin Institute in Scotland, using the process of nuclear transfer from a cell taken from a mammary gland (somatic cell nuclear transfer). Her cloning proved that a cloned organism could be produced from a mature cell from a specific body part.
John Gurdon