Cloning Essay

903 Words 4 Pages
Technology today now allows us to address the idea of cloning. Cloning is creating an identical genetic copy of an organism or a cell. The process of this is there will be three subjects A, B, and C a body cell will be taken from A, the DNA will be extracted then an egg cell will be taken from B the nucleus removed. The DNA from A is fuse with the egg cell from B the fused cell develops into an embryo when it is placed in C the surrogate and then the clone is of subject A. To get to cloning there had been a lot of research to led up to that idea. First, in 1885 the first demonstration of artificial embryo twinning conducted by Hans Adolf Eduard Dreisch on sea urchins. He discovered how shaking two sea urchin embryos could separate them. After …show more content…
Next, in 1902 Hans Spemann experimented on salamander to discover artificial embryo twinning in a vertebrate. He created a noose with a baby hair and used it to separate the salamander’s embryo. The cells then grew into adult salamanders. His experiment showed more complex animals embryos could still be twinned to make identical organisms. Hans Spemann also discovered that the cell nucleus controlled the embryonic development. He once again in 1928 used a baby hair to tie a noose, he then squeezed a fertilized salamander egg to push the nucleus to the other side of the cytoplasm. The egg was divided but only on the side that had the nucleus. This was done for four cell divisions making 16 cells he loosened the noose, the nucleus slide back to non-diving side of the egg. Once, again he used the baby hair as a noose to create a new cell from the rest of the embryo. All of the cells eventually grew into adult salamanders. This proved the nucleus directs the complete growth of a salamander. In 1952 was the first successful nuclear transfer performed by Robert Briggs and Thomas King. They performed their experiment on frogs the nucleus inside an early tadpole embryo was put in to an

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