Perhaps the most famous sheep in history, Dolly was the first mammal to be cloned from an adult cell through the somatic cell nuclear transfer technique, in which the nucleus of an egg cell is replaced by the nucleus of a cell from the organism to be cloned. In successful cases, the egg cell develops into a healthy fetus, but the success rate of cloning has been low. Of 277 eggs, only 29 created viable embryos, and Dolly was the only one to survive to adulthood. How did she get her name? Discuss