The four sheep cloned from Dolly’s cell line did not suffer the same bad health as their sister, Dolly. Sheep live an average of 10 to 12 years, and these four — Daisy, Diana, Debbie, and ...

The death of Dolly the sheep, the first animal to be cloned from an adult cell, has sparked renewed fears over the safety of cloning techniques. The Roslin Institute announced the decision was ...