What is cloning?

Cloning is asexual production of an accurate copy of the original. For example, you can use cloning to create an accurate copy of one cell. Copy of cells would be identical to the first cell and would have the same exact DNA sequence. In many cases, cloning was used to reproduce the type cells. In some cases it was possible to clon the individual organism, such as sheep, dolly, unlike reproduction, which includes two "parents", such as male and female plants, cloning has a single parent. This is often used in the reproduction of certain plants. Some plants have undergone cloning processes for thousands of years, but do not play a role in ethical debates that surround the cloning of animals, and especially humans. Most identify Dolly sheep, cloned in 1996. Dolly's parent had the DNA transferred to the egg that was removed by the core. This is called the transmission of somatic cells. The cell was then treated with chemicals and stimulated for growth before almost the exact replicate of the cloned sheep was born.

In fact, Dolly was not the exact clone of her parent. She shared the same DNA, but some of the genetic materials of donor cells have also become part of Dolly's parenting. This is only 0.01% of Dolly DNY, but it makes a negligible difference.

Cloning that resulted in Dolly was not quite easy. In fact, it took 277 donor eggs and production of 29 embryos before reaching live birth. Experiments of cloning calfs with nuclear transmission of somatic cells prospered less than 1% of the time.

But the idea of ​​cloning people remains. While many people feel that cloning human tissue, as with transplant organs, can be valuable, many others feel that the cloning of the whole person is unethical. Some scientists without religious affiliation also believe that ethical problems that could be caused in the extension of life through cloned BPAna, they need further control.

From a moral point of view, it has a lot to do with some reproductive clones. Many people believe that the embryo, although simply fertilized sperm and eggs are human, and therefore should not be destroyed. Experimenting embryos to the production of clones often lead to the death of embryos. Some also feel that cloned embryos can be used specifically to harvest part of the body and then kill.

Some also feel that the harvest of the embryo cells is also incorrect, or that the creation of embryos for stem cell harvesting is unethical. Others argue that stem cell research can point out the treatment of diseases for which there is currently no medicine. However, it should be noted that fewer people against the idea of ​​cloning part of the body than the cloning of man.

others are afraid of cloning of extinct or endangered animals. The novel by Michael Crichton Jurassic Park was extensively dealt with by this topic. Especially because the real dinoSaur's DNA has been found recently, in sufficient cloning some scientists fear the environmental impact that could result from the reproduction of long dead species.

In some countries, stem cell research has been stopped when it involves cloning human embryos. Other scientists are exploring the possibility of finding stem cells elsewhere, as in the umbilical umbilical umbilical cord blood of newborns. It is suspected that some countries may try to clone the whole person, but have not yet achieved it.

Although cloning is a lot in the news, it is still an imperfect science with more failures than at present achievements. This suggests that scientists may not fully understand all the mechanisms involved in creating an exact copy of another organism. With further research, such mechanisms can be understood and clear threes to the production of clones. Yet it will probably lead to another controversy.