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Cloning is the process of producing individual organisms with identical genomes, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction; this reproduction of an organism by itself without a mate is known as parthenogenesis.
Scientists have cloned the first rhesus monkey, a breakthrough that could help advance medical research but has drawn criticism from an animal welfare group. New cloned monkey species highlights ...
Ever since cloning produced Dolly the sheep, scientists have copied a slew of mammals ranging from dogs to ponies. Primates, however, have been elusive -- until now. Chinese researchers have ...
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 ...
With the cloning of a sheep known as Dolly in 1996 by somatic cell nuclear transfer (SCNT), the idea of human cloning became a hot debate topic. [5] Many nations outlawed it, while a few scientists promised to make a clone within the next few years. The first hybrid human clone was created in November 1998, by Advanced Cell Technology.
Starbuck II, a clone of Holstein breeding bull Hanoverhill Starbuck, was born by Caesarean section on 7 September 2000. It was one of the first animals cloned for commercial purposes. [17] [18] In 2000, Texas A&M University cloned a Black Angus bull named 86 Squared, after cells from his donor, Bull 86, had been frozen for 15 years. Both bulls ...
The cry proteins were discovered to provide the insecticidal activity in 1956, and by the 1980s, scientists had successfully cloned the gene that encodes this protein and expressed it in plants. [15] The gene that provides resistance to the herbicide glyphosate was found after seven years of searching in bacteria living in the outflow pipe of a ...
A commercial with Scottish scientists playing with sheep was aired on TV, and a special report in Time magazine featured Dolly. [7] Science featured Dolly as the breakthrough of the year. Even though Dolly was not the first animal cloned, she received media attention because she was the first cloned from an adult cell. [14]