Deccan Chronicle
Asian Age cartoonThursday, February 21, 2008
1997: Dolly the sheep is cloned
1997: Dolly the sheep is cloned
Scientists in Scotland have announced the birth of the world's first successfully cloned mammal, Dolly the sheep. Dolly, who was created at the Roslin Institute in Edinburgh, was actually born on 5 July 1996 although her arrival has only just been revealed.
Dolly is the first mammal to have been successfully cloned from an adult cell. Previous clonings have been from embryo cells.
The sheep's birth has been heralded as one of the most significant scientific breakthroughs of the decade although it is likely to spark ethical controversy.
Scientists in Scotland cloned a ewe by inserting DNA from a single sheep cell into an egg and implanted it in a surrogate mother.
They now have a healthy seven-month-old sheep - Dolly - who is an exact genetic duplicate of the animal from which the single cell was taken.
DNA tests have revealed that Dolly is identical to the ewe who donated the udder cell and is unrelated to the surrogate mother.
It will enable us to study genetic diseases for which there is presently no cure
Dr Ian Wilmut, embryologist Embryologist Dr Ian Wilmut, from the Roslin Institute, said: "It will enable us to study genetic diseases for which there is presently no cure and track down the mechanisms that are involved."
The research, published in Nature magazine, follows the Edinburgh team's success in cloning sheep embryos. Last year they produced two identical sheep, which were clones of an original embryo.
The company which has bought the rights to the research, PPL Therapeutics, said Dolly would help to improve understanding of ageing and genetics and lead to the production of cheaper medicines.
US President Bill Clinton has set up a special task force to investigate cloning in order to examine the legal and ethical implications.
Scientists in Scotland have announced the birth of the world's first successfully cloned mammal, Dolly the sheep. Dolly, who was created at the Roslin Institute in Edinburgh, was actually born on 5 July 1996 although her arrival has only just been revealed.
Dolly is the first mammal to have been successfully cloned from an adult cell. Previous clonings have been from embryo cells.
The sheep's birth has been heralded as one of the most significant scientific breakthroughs of the decade although it is likely to spark ethical controversy.
Scientists in Scotland cloned a ewe by inserting DNA from a single sheep cell into an egg and implanted it in a surrogate mother.
They now have a healthy seven-month-old sheep - Dolly - who is an exact genetic duplicate of the animal from which the single cell was taken.
DNA tests have revealed that Dolly is identical to the ewe who donated the udder cell and is unrelated to the surrogate mother.
It will enable us to study genetic diseases for which there is presently no cure
Dr Ian Wilmut, embryologist Embryologist Dr Ian Wilmut, from the Roslin Institute, said: "It will enable us to study genetic diseases for which there is presently no cure and track down the mechanisms that are involved."
The research, published in Nature magazine, follows the Edinburgh team's success in cloning sheep embryos. Last year they produced two identical sheep, which were clones of an original embryo.
The company which has bought the rights to the research, PPL Therapeutics, said Dolly would help to improve understanding of ageing and genetics and lead to the production of cheaper medicines.
US President Bill Clinton has set up a special task force to investigate cloning in order to examine the legal and ethical implications.
Friday, February 8, 2008
pic of the day
Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2008 February 7
2008 February 7
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