(Dolly and the Dollies are Finn Dorset sheep, which can live up to 12 years.) This story, unfortunately, is a sad one. Dolly became infected with a virus unique to sheep that caused tumors to grow ...

Dr Harry Griffin said: "Sheep can live to 11 or 12 years of age ... a spokesman for the Institute said. Dolly, a Finn Dorset named after the country and western singer Dolly Parton, was cloned ...

Dolly was derived from an egg cell from a Scottish Blackface sheep and the mammary gland of a Finn Dorset sheep and was implanted into her surrogate after six days of development in a lab.

She was born in 1996 after scientists figured out how to remove the DNA from the egg cell of a Scottish Blackface sheep and basically replace it with the DNA of a mammary cell from a Finn Dorset ...

In the case of Dolly, the cells came from the mammary gland of the donor, a six-year-old Finn Dorset sheep. (Her name was a bit of a joke on the part of the scientists, a reference to American ...