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Title: Cloning : You Say Cloning Is Bad But Do You Know Why?
Words: 1382
You Say Cloning Is Bad. But Do You Know WHY?
Despite the failure of cloning an adult mammal after numerous years of research, Ian Wilmut, an embryologist of the Roslin Institute near Edinburgh, Scotland, found a way to do the seemingly impossible. Wilmut and his colleagues took mammary-gland cells from an adult sheep and placed them in a solution that essentially starved them of nutrients and cause them to stop growing for a few days. Then, with a spark of electricity, they fused each mammary cell with an enucleated egg cell. The resulting cells were allowed to grow into embryos, which were then transplanted into surrogate mother ewes to complete their development. Nearly three hundreds attempts at this technique resulted in failure. Some eggs did not accept mammary cell nuclei, e ...
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