2023-07-05 18:53:26
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 nuclear-free ovules with these types of components, the sheep was born, which its creators, Ian Wilmut and Keith Campbell, later explained that its name was in homage 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 Welsh Mountain male to produce about six offspring.
The first was Bonnie in April 1998. The following year, Dolly would have twins, Sally and Rosie, and in her last birth she had triplets.
However, Dolly would have a shorter than average lifespan. At 6 and a half years old, 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.
At his necropsy it was found that he had a form of lung cancer that other sheep in his herd also developed that fell ill and died for the same reason.
Likewise, it was speculated that the animal was blind, due to the fact that it had 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 stuffed 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 on Radio Perfil. Locution by Pita Fortin.
by Radio Profile
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