Dolly was born as a result of a nuclear combination of a cell from the mammary gland of a 6-year-old Finnish-Dorset breed.
After 277 fusions of anuclear ovules with these types of components, the sheep was born, which later its creators, Ian Wilmut and Keith Campbell explained that its name was in tribute to the singer Dolly Parton.
The announcement to the world was made only seven months later, on February 22, 1997, when he was already living normally at the Roslin Institute.
Soon after, she was crossed with a male Welsh Mountain breed to produce about six young.
The first was Bonnie in April 1998. The following year, Dolly would have twins, Sally and Rosie, and in her last delivery she had triplets.
However, Dolly would have a shorter life than average. At the age of 6 and a half, on February 14, 2003, she had to be euthanized due to a progressive lung disease, when the specimens of her breed live between 11 and 12 years.
In his necropsy it was observed that he had a form of lung cancer that was also presented by other sheep in his flock that became ill and died for the same reason.
Likewise, it was speculated that the animal was blind, due to its crooked hooves.
In addition, it was considered that, having a genetic age of six years at birth, that is, the same age as the sheep from which it was cloned, its aging had occurred more suddenly.
However, the Roslin Institute established that the controls that were made to his health throughout his life did not show any abnormality.
His dissected body is currently on display at the National Museum of Scotland.
On July 5, 1996, Dolly the sheep, the first cloned animal, was born in the United Kingdom.
The story is also news. Radio Profile.
Screenplay by Lucas Boltrino. Voiceover by Pita Fortín.
by Radio Profile FM 101.9