How was Dolly the Sheep created?

When Dolly was born, curious people couldn't help asking: Who was the creator of Dolly's sheep? In the ancient legend of mankind, the creation of human beings or some higher animals is a patent of "God" or "God". And "cloning" is obviously a challenge to the authority of "God". In human history, there are not many people who directly challenge "God" through their own research results. Copernicus denied the geocentric theory with his theory of the sun, and fundamentally shook the creationism of God: Darwin's theory of evolution proved the unity of the animal and plant worlds, and proved that all kinds of things on the earth have their own unified origin and unified development chain, which is their own development process. Now, a new number has been added to this list.

It is no accident that Dr. wilmot of Roslin Institute cloned Dolly the sheep. Dr wilmot's Roslin Institute was founded during World War II. German submarines prevented ships from all over the world from entering Britain, and the British faced famine. Therefore, the Animal Breeding Center, the predecessor of Roslin Institute, was established, and its task was to solve the food production problem in China by using the emerging gene research technology.

Animal Breeding Center has made great achievements in agriculture and food research. By the end of 1960s, Britain's agricultural production level had caught up with any other country in the world. Under the new situation, the "Animal Breeding Center" shifted its strategic goal and changed its name to the current "Roslin Research Center", aiming at biotechnology and cloning. After nearly 30 years of "bioengineering" research and hundreds of failures, this cloned sheep that shocked the world was resurrected.

Dolly the cloned sheep was created by Dr. ian wilmut. He was born in Hampton Luce, Warwickshire, central England. Wilmot studied at Nottingham University in his early years. The tutor is Eric Lamine, a world-famous reproductive expert. After graduating from college, he entered the field of embryology. Since then, Wilmut has made animal gene technology his lifelong goal. 197 1 went to Darwin College, Cambridge University for further study, and received his doctorate two years later. His doctoral thesis is entitled "Freezing technology of pig semen".

1973, just after receiving his doctorate in wilmot, he bred the first calf with frozen embryos. He frozen embryos from cows with the best meat quality and milk quality, thawed them and implanted them into other cows, thus greatly improving the quality of cows. Because each cow can calve no more than 5 ~ 10 in a lifetime, high-grade dairy cows are of great significance to farmers.

However, scientists also doubt whether cloning using somatic cells can be realized. 1986, Wilmut attended a meeting in Ireland, and the tense atmosphere of the meeting made him step by step to the roadside bar. When he was in a state of high relaxation in the bar, he overheard people talking about a scientist who bred a cow with a developing embryo. This convinced him that large livestock could be cloned. Wilmot's mind flashed a skylight, "cloning" is a way forward. In this way, when most scientists were puzzled by cloning research, wilmot strengthened his confidence to move forward.

Cloning is not the purpose of wilmot's research. Wilmut's research for many years aims to find a better way to change the genetic composition of domestic animals and cultivate a large number of animals that can provide consumers with better food or chemicals. Dr. Wilmut said: "In a basic sense, our overall goal is actually not to cultivate replicas, but to accurately change the genes of cells." .

For Dr Wilmut, cloning is only a necessary part of the whole work. The first is "genetic engineering", which makes animals have more functions and stronger disease resistance through complex genetic modification. Not only that, but also animals can produce better meat, eggs, hair and milk. These new and excellent varieties artificially cultivated by "genetic engineering" will degenerate if they cannot clone themselves. In this way, it is necessary to study cloning technology in order to cultivate excellent varieties and constantly ensure their own Excellence. Like most scientists in the world, wilmot's starting point is good. Dolly, a cloned sheep, was bred in order to turn as many animals as possible into protein factories that can be used for drug production.