In 1997, Scottish scientists announced the first successful cloning of an adult animal - Dolly the Sheep. But her birth was mired in controversy.
- Dolly the sheep was the world's first clone.
- Dolly was produced from fusion cell cloning and only born after many attempts.
- Dolly died at an early age - the same age as the sheep she was cloned from had been.
- She paved the way for treatments for hemophilia and cystic fibrosis.
For many years, scientists tried to crack the mystery of artificial cloning: the ability to produce an exact genetic copy of an adult animal.
But many of the first cloned animals were born with harrowing birth defects or died at a very young age.
Then, in 1997, scientists at the Roslin ...
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