advances in science have demonstrated to us that things that once seemed possible only in science fiction could become a reality. The cloning of a sheep brought the possibility of using genetic engineering to create new organs, or even whole human beings, one step closer.
Some people consider this to be a dangerous development, and believe that all that research should be banned. Interfering with nature in this way could bring with it dangers that none of us can imagine. We have no idea how an artificially-created person might behave, or indeed how he or she might suffer. ________________ (2), we may find ourselves in a position which we do not like, but which we are unable to reverse. _________________ (3), many people would say that it is not for human beings to decide what other human beings should be like. It is not only people with deep religious beliefs who feel that it is wrong, for example, for parents to choose whether their baby will be a boy or a girl, or have blue eyes or musical talent._________________ (4), the latest research in genetics has also opened the possibility of new treatment for many diseases which up to now have been incurable. If it were possible to prevent a baby from developing a hereditary disease by modifying its genes, should we stop the scientists? If doctors could replace a diseased organ with a new one grown from cells, should it not be allowed?
___________________ (5), I would say that genetic engineering has the potential to be both a huge benefit and a terrible curse for humankind. To make sure that we benefit from it, it will be necessary to control it very strictly. The real challenge will be to find ways of monitoring the research that is conducted in laboratories all over the world and to make sure that it is only used for the good of everyone