Human Cloning Essay
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Human CloningThe recent news of the successful cloning of an adult sheep in which the sheep s DNA was inserted into an unfertilized sheep egg to produce a lamb with identical DNA has generated an outpouring of ethical concerns. These concerns are not about Dolly, the now famous sheep, nor even about the considerable impact cloning may have on the animal breeding industry, but rather about the possibility of cloning humans. For the most part, however, the ethical concerns being raised are exaggerated and misplaced, because they are based on erroneous views about what genes are and what they can do. The danger, therefore, lies not in the power of the technology, but in the misunderstanding of its significance. Producing a clone of a human being would not amount to creating a "carbon copy" an automaton of the sort familiar from science fiction. It would be more like producing a delayed identical twin. And just as identical twins are two separate people biologically, psychologically, morally and legally, though not genetically so a clone is a separate person from his or her non-contemporaneous twin. To think otherwise is to embrace a belief in genetic determinism the view that genes determine everything about us, and that environmental factors or the random events in human development are utterly insignificant. The overwhelming consensus among geneticists is that genetic determinism is false. As geneticists have come to understand the ways in which genes operate, they have also become aware of the myriad ways in which the environment affects their "expression." The genetic contribution to the simplest physical traits, such as height and hair color, is significantly mediated by environmental factors. And the genetic contribution to the traits we value most deeply, from intelligence to compassion, is conceded by even the most enthusiastic genetic researchers to be limited and indirect. Indeed, we need only appeal to our ordinary experience with identical twins that they are different people despite their similarities to appreciate that genetic determinism is false. Furthermore, because of the extra steps involved, cloning will probably always be riskier that is, less likely to result in a live birth than in vitro fertilization (IVF) and embryo transfer. (It took more than 275 attempts before the researchers were able to obtain a successful sheep clone. While cloning methods may improve, we should note that even standard IVF techniques typically have a success rate of less than 20 percent.) So why would anyone go to the trouble of cloning?There are, of course, a few reasons people might go to the trouble, and so it s worth pondering what they think they might accomplish, and what sort of ethical quandaries they might engender. Consider the hypothetical example of the couple who wants to replace a child who has died. The couple doesn t seek to have another child the ordinary way because they feel that cloning would enable them to reproduce, as it were, the lost child. But the unavoidable truth is that they would be producing an entirely different person, a delayed identical twin of that child. Once they understood that, it is unlikely they would persist. But suppose they were to persist? Of course we can t deny that possibility. But a couple so persistent in refusing to acknowledge the genetic facts is not likely to be daunted by ethical considerations or legal restrictions either. If our fear is that there could be many couples with that sort of psychology, then we have a great deal more than cloning to worry about. Another disturbing possibility is the person who wants a clone in order to have acceptable "spare parts" in case he or she needs an organ transplant later in life. But regardless of the reason that someone has a clone produced, the result would nevertheless be a human being with all the rights and protections that accompany that status. It truly would be a disaster if the results of human cloning were seen as less than fully human. But there is certainly no moral...
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