Cloneing Sheeps Term paper
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A Clone in Sheep's Clothing
Three years ago a sheep named Dolly became the biggest news since the first successful open-heart surgery. Dolly, unlike every other mammal on earth is an identical copy of its mother. Dolly has no father. The "miracle" of cloning was preformed by Dr. Ian Willmut and his team at Roslin Institute in Edinburgh, Scotland. The new research has opened a large amount of possibilities for the future use of the technique as well as many ethical issues regarding human cloning.
The Roslin Institute team created Dolly by transferring the nuclei of adult sheep cells in to the egg of another female sheep. The egg had its natural nucleus removed by microsurgery. Ones the new nucleus was implanted in to the egg cell it now had a complete set of genes identical to the sheep who donated the nucleus. The transplanted egg cells were then cultured for a short period of time and implanted into a female sheep to carry the pregnancy to term. The nuclei of many different adult cells were used in the experiment including mammary gland cells, which were the ones to produce the successful result. The sheep born as a result of the experiment was an exact genetic duplicate, clone, of the sheep donating the adult nucleus. Though other mammals have been cloned before, they were always created form embryonic cells, never a cell of a fully-grown animal. This research also proved that adult animal cells do contain a workable copy of all the genetic material needed to create a whole new animal.
Willmut's technique is very difficult and requires a lot of work....
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