The first animal cloned by nuclear transfer was a named dolly.
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cow
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sheep

In the sentence "The first animal cloned by nuclear transfer was a named Dolly", the word that correctly completes the sentence is sheep. A sheep named Dolly is the first animal cloned from an adult somatic cell by nuclear transfer. She was cloned at the Roslin Institute of the University of Edinburgh, Scotland, in 1996. There she died in 2003.

b- The value of fast food and the way it has shaped our world