Scientists Cloned a Sheep: Dolly (1996)

Yes. In 1996, scientists at the Roslin Institute (Scotland) cloned Dolly the sheep—the first mammal cloned from an adult somatic cell (mammary gland) via somatic cell nuclear transfer (SCNT).

Significance

• Proved differentiated adult cells can be reprogrammed to totipotency.
• Opened doors to therapeutic cloning, stem cell research, regenerative medicine.
• Sparked global ethical debate on human cloning.

Dolly's Life

• Born July 5, 1996; announced Feb 1997.
• Lived 6.5 years (normal ~11–12); euthanized for progressive lung disease (jaagsiekte) and arthritis.
• Had 6 lambs naturally.

Since then: mice, cows, pigs, goats, horses, dogs, cats, monkeys cloned via SCNT. Human reproductive cloning universally banned; therapeutic cloning regulated.