(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 ...

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 ...

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.

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 ...