The Story of Dolly the Sheep – First Cloned Mammal Ever скачать в хорошем качестве

The Story of Dolly the Sheep – First Cloned Mammal Ever

The egg cell was unfertilized, and the nucleus of the cell was removed only to be replaced by the nucleus collected from the adult cell. Then the scientists fused the newly formed cell, and with the electric shock, they managed to commence the process of dividing which led to creating the Blastocyst. Then, they put the Embryo into another Scottish Black-faced female sheep. Easy. The Roslin Institute had an excellent team made of researchers, biologist, vets, embryologists, surgeons, technicians and farm staffs. The team was under the supervision of Sir Ian Wilmut who became a well-known figure around the world for achieving such a fantastic achievement. From the pioneers of modern science to the general people of any household, all were astonished to see a remarkable accomplishment being unfolded just before the millennium. Another scientist who is also remembered for his involvement in the cloning project was Prof Keith Campbell. There are also two technicians who claimed that they dedicated their lives to the process of creating Dolly. Bill Ritchie and Karen Mycock. However, they were not highlighted as the scientists in the research paper that was published in “Nature Magazine” in 1997. Instead of being in the list of authors, they appeared in the list of acknowledgments at the end of the paper. Dolly was cloned from a somatic cell of a Scottish Black-faced female sheep. Previously it was thought that cloning could only be done with embryonic cells. However, the researchers of Roslin Institute decided to challenge the contemporary concept of cloning. They decided to take the cell from an adult sheep. first cloned sheep named Dolly was born on 5th July 1996 in Scotland at a research facility known as “Roslin Institute.” The news of the birth of a cloned mammal intrigued the whole world as the entire cloning concept was based on the theory that it is impossible to clone using an adult cell. However, the researchers made the previously thought to be impossible, possible. The Roslin facility successfully cloned a sheep from a cell of the mammary gland of a six years old Finn Dorset sheep. The scientists have always been attracted to cloning which is the most controversial subject in modern science as it involves giving birth to something identical to its parent. However, when Dolly was introduced to the world, everyone became astonished so much so that the institute in which she was born had to answer almost 3,000 phone calls after the declaration of Dolly’s birth. Professor Ian Wilmut of the Roslin Institute pictured, with his old friend, ‘Dolly’. (Photo by Maurice McDonald – PA Images/PA Images via Getty Images) The researcher of Roslin wanted to show the world that a mammal can be cloned from an adult cell, and so they started their project in 1995 which resulted in success. Thus, Dolly’s journey began a year before her birth. Although Dolly was born in 1996, the scientists at Roslin institute disclosed the matter only on 22 February 1997. They waited several months to pile up the needed data and write down all the procedures they had to go through to make the cloning possible. It was later published that the researchers got their much-awaited result after attempting for the 277 times. The researchers made a miracle happen which was a breakthrough in the history of cloning. Cloning is a process through which genetically identical individuals can be originated. This is a term of much controversy as many countries are concerned about the possibility of human cloning in the future. However, there has been no question raised about animal cloning so far. In January 2008 the U.S. Food and Drug Administration expressed their view that milk and meat from any cloned animal can be consumed. This has provided the researchers with the opportunity to clone livestock for agricultural purposes as well as for testing medicines on them. The researchers decided to collect an adult cell from a six-year-old white sheep. They obtained a cell from the mammary gland and isolated the nucleus form that cell. Then they placed the nucleus into an egg cell which was derived from a Scottish Black-faced female sheep. Somatic cells are all the cells that comprise the body except the cells which can be found in the sexual organs. Somatic cells had not been used for cloning before the cloning of Dolly. First, the somatic cell was isolated from the adult sheep. Then the nucleus and DNA was removed from the egg cell. The nucleus then is added to the egg cell. Later in the test tube, the egg was developed into an embryo. After that, it was implanted into a Black-faced female sheep. Dolly got her name as a tribute to the famous country singer Dolly Parton. The researchers found the name best suited the sheep. The renowned singer was known for her country songs like “I Will Always Love You,” “Jolene,” “Coat of Many Colors.” to name a few.