Animal Cloning

Dolly was the first cloned animal, generated from a somatic cell, or differentiated, with no fertilization. This cell was from a cell culture obtained from the udder of the sheep that were to be cloned. As we said before, the cells of a given tissue when kept alive outside the body in culture, embryos are not spontaneous, but more differentiated cells such as: not "remember" how it carries out the embryo. To get one of these "recovered memory" cells and to produce a new being, it used a technique called nuclear transfer: it was the nucleus of that cell, which is the part that contains the DNA and thus information and merged with the cytoplasm of an egg from another sheep, which had previously removed the nucleus. It was used because an egg is a cell equipped for embryonic development, and its cytoplasm (the substance surrounding the nucleus) would be in any way the right environment for the cell nucleus reprogrammed adult. While working on your research paper you will find out that this cell is converted into a single embryo in sophisticated manner begins to grow identical to that obtained by the fusion of an ovum and a spermatozoon. After several days of growth in vitro embryo was implanted in a mother and a hire was born 148 days after Dolly, a sheep genetically identical to the game.

We may compose a custom essay on, for example, animal cloning pros and cons, or cloning in general. Cloning would allow us to count on many identical copies of animals that are of interest for various reasons: for its natural characteristics (milk yield, health, longevity ...) or for features that we have introduced us to new technologies of genetic manipulation. In recent years it has witnessed a spectacular development of technologies to genetically manipulate plants and animals. Agencies are called "transgenic" plants and animals which have altered their genetic information to their DNA, their drawings, generally introducing certain genes that make them more productive. Dolly's case is an example. The sheep of the Roslin Institute was part of an ambitious program that the company PPL Therapeutics was designed to obtain large-scale genetically modified animals to produce human proteins in their milk of therapeutic interest. The process of obtaining transgenic animals is complex and gives rise to few individuals, at least when considered from the viewpoint of mass production. Cloning would have a large number of animals more suitable. Another application is the possibility of having multiple copies of genetically modified animals for their organs do not cause rejection when transplanted to humans (xenotranplantes).