Ian Wilmut: Breaking The Clone Barrier

In the closing years of this millennium, a quiet, unassuming British embryologist named Ian Wilmut set out to improve the productivity of farm animals and along the way set off a biological earthquake. The experiment he tenaciously pursued--to get a cell from an adult mammal to behave like a cell from a developing embryo--had long since been abandoned at the major centers of scientific research. Even high school biology students knew that once a mammalian cell had differentiated, and was programmed by nature to be bone or nerve or skin, it could not be deprogrammed.

Yet Wilmut did it. From...

Want the full story?

Subscribe Now


Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!