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The world meets Dolly the cloned sheep - February 22 1977 This Day in History

The world meets Dolly the cloned sheep - February 22 1977 This Day in History -------------------- On this day in 1997, scientists revealed one the most significant breakthroughs in the history of biology - and she went by the name of Dolly. The creation of Dolly the sheep, the first mammal to be cloned successfully from an adult cell, was announced to the world on this day in 1997. Dolly, a Finn Dorset sheep, was born on July 5 the previous year at the Roslin Institute near Edinburgh. She came about after scientists extracted the nucleus of a cell from the udder of a six-year-old ewe and transplanted it into an egg cell from a second sheep. The egg was then inserted into the uterus of a third sheep, to develop. The last surrogate, a Scottish blackface ewe, produced Dolly - a genetic duplicate of the animal that donated the original udder cell.