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A Holstein heifer named Daisy was cloned by Dr. Xiangzhong (Jerry) Yang using ear skin cells from a high-merit cow named Aspen at the University of Connecticut in 1999, followed by three additional clones, Amy, Betty, and Cathy in 1999. [14]
Dolly (5 July 1996 – 14 February 2003) was a female Finn-Dorset sheep and the first mammal that was cloned from an adult somatic cell. She was cloned by associates of the Roslin Institute in Scotland, using the process of nuclear transfer from a cell taken from a mammary gland. Her cloning proved that a cloned organism could be produced from ...
Cloning has been used by scientists since the 1950s. [5] One of the most well known clones is Dolly the sheep. Dolly was born in the mid 1990s and lived normally until the abrupt midlife onset of health complications resembling premature aging, that led to her death. [5] Other known cloned animal species include domestic cats, dogs, pigs, and ...
Cloning of animals is opposed by animal-groups due to the number of cloned animals that suffer from malformations before they die, and while food from cloned animals has been approved as safe by the US FDA, [105] [106] its use is opposed by groups concerned about food safety. [107] [108]
Since scientists produced the first cloned mammal Dolly the sheep in 1996 using the somatic cell nuclear transfer (SCNT) technique, 23 mammalian species have been successfully cloned, including cattle, cats, dogs, horses and rats. [4] Using this technique for primates had never been successful and no pregnancy had lasted more than 80 days.
Megan and Morag, two domestic sheep, were the first mammals to have been successfully cloned from differentiated cells. [1] They are not to be confused with Dolly the sheep which was the first animal to be successfully cloned from an adult somatic cell [2] or Polly the sheep which was the first cloned and transgenic animal. [3]
Another kitten (a female) was stillborn. This incident was the first time a cloned pet gave birth. Throughout her life, CC appeared to be free of the cloning-related health problems that have arisen in some other animal clones. "CC has always been a perfectly normal cat and her kittens are just that way, too," according to Shirley Kraemer, CC's ...
The cloned Pyrenean ibex was born in Spain through genetic cloning techniques, with the research article published in 2009. [2] However, she died several minutes after birth due to a lung defect. [3] [4] The Pyrenean ibex remains the only animal to have ever been brought back from extinction—and also the only one to go extinct twice.
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