Cloning :: science

CloningIntroduction Todays technology develops so quickly that many infeasible things pay off true the copy technology is the example. What is cloning? Cloning is a process used to create an exact copy of a mammal by use the complete genetic material of a regular body electric cell. Different from the common propagate, cloning need only one cell and without sex. In 1997, the nifty news shocked the whole world that the British scientists created a lamp named Dolly from a single cell, miraculously the cell had been taken from the udder of bounteous sheep, which tape the first cloning experiment was successful.The history of cloningAbout the cloning history, we trace back to 400 million years BC, the plants could clone themselves but non to long. The human found the cloning 200 years ago, the first person who did the cloning experiment is a German biologist named Han Spermann, he uses the bullock block exsanguinous to clone chicken in 1938 but it was failed. Until 1981, Kal I llmensee and Peter Hoppe report that they clone normal mice and embryo cell it was a huge progress of the cloning history. after(prenominal) 2 years, the embryologists in UAS first cloned the humans cells they put 32 cells into a surrogate father, and then have cloned 4 extra aforementioned(prenominal) cells. In 1997, Ian Wilmut and his colleague Keith Campbell cloned a new adult sheep called Dolly. (Will, April 2002) So human spends long time on cloning research.The process of cloningThe cloning has both principal(prenominal) parts, one is the plant cloning and the other is the animal cloning. One type of plant cloning naturally occurs when a plant grows a base runner. The runner grows horizontally across the ground forming a carbon copy of that same plant at the end. Eventually the runner dies and the daughter plant is separated from the mother plant. another(prenominal) is when you cut a branch or leaf off of a plant and plant it. It will grow another identical plant. That method is called a cutting. Such as stolon, it is a weak branch of a plant, when it falls over and the tip touches the ground. The tip swells and roots are formed so that process in the plant can continue.The other kind of cloning in animals is nuclear transfer cloning. Nuclear transfer is when the nucleus of one cell is planted into another cell that has had the nucleus taken out.Cloning scienceCloningIntroduction Todays technology develops so quickly that many impossible things become true the cloning technology is the example. What is cloning? Cloning is a process used to create an exact copy of a mammal by using the complete genetic material of a regular body cell. Different from the common propagate, cloning need only one cell and without sex. In 1997, the great news shocked the whole world that the British scientists created a lamp named Dolly from a single cell, miraculously the cell had been taken from the udder of adult sheep, which show the first cloning experiment w as successful.The history of cloningAbout the cloning history, we trace back to 400 million years BC, the plants could clone themselves but not to long. The human found the cloning 200 years ago, the first person who did the cloning experiment is a German biologist named Han Spermann, he uses the egg white to clone chicken in 1938 but it was failed. Until 1981, Kal Illmensee and Peter Hoppe report that they clone normal mice and embryo cell it was a huge progress of the cloning history. After 2 years, the embryologists in UAS first cloned the humans cells they put 32 cells into a surrogate mother, and then have cloned 4 extra same cells. In 1997, Ian Wilmut and his colleague Keith Campbell cloned a new adult sheep called Dolly. (Will, April 2002) So human spends long time on cloning research.The process of cloningThe cloning has two main parts, one is the plant cloning and the other is the animal cloning. One type of plant cloning naturally occurs when a plant grows a runner. The ru nner grows horizontally across the ground forming a carbon copy of that same plant at the end. Eventually the runner dies and the daughter plant is separated from the mother plant. Another is when you cut a branch or leaf off of a plant and plant it. It will grow another identical plant. That method is called a cutting. Such as stolon, it is a weak branch of a plant, when it falls over and the tip touches the ground. The tip swells and roots are formed so that growth in the plant can continue.The other kind of cloning in animals is nuclear transfer cloning. Nuclear transfer is when the nucleus of one cell is implanted into another cell that has had the nucleus taken out.