Today marks 20 years since the world was first introduced to Dolly the sheep, the first mammal ever to be cloned from an adult cell. A team of researchers led by Professor Ian Wilmut at the Roslin Institute in Scotland successfully cloned Dolly from a mammary cell taken from an adult ewe, and announced the breakthrough in 1997. This momentous achievement not only revolutionized the field of biotechnology, but opened the door for scientists to explore the potential of cloning as a means of preserving endangered species and improving animal welfare.

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source: Phys.org