1. Cloning Technology and Genetic Breeding
In agriculture, people have cultivated a large number of high-quality and high-yield varieties with drought resistance, lodging resistance and pest resistance by using "cloning" technology, which has greatly increased grain output. In this regard, China has entered the forefront of the world's most advanced.
2. Cloning technology and protection of endangered species
Cloning technology is a gospel for protecting species, especially rare and endangered species, and has great application prospects. From a biological point of view, this is also one of the most valuable places of cloning technology.
3. Cloning technology and medicine
At present, doctors can transplant almost all human organs and tissues. But as far as science and technology are concerned, rejection in organ transplantation is still the most troublesome. The reason of rejection is poor compatibility due to tissue mismatch. If the organs of "clones" are provided to "hominids" for organ transplantation, there is no need to worry about rejection at all, because the genes and tissues of the two are matched. The question is, is it humane to use "clones" as organ donors? Is it legal? Is it economical?
Cloning technology can also be used to multiply valuable genes. For example, in medicine, people produce insulin to treat diabetes, growth hormone to make dwarfism patients grow taller again, fibrinolytic enzyme to resist various virus infections and so on through "cloning" technology.
Disadvantages of cloning technology
Theoretically, cloning technology is still immature; In practice, the success rate of cloning animals is still very low, some individuals show physiological or immune defects, and the disability rate of animals is quite high, accompanied by premature aging. In addition, the impact of cloning technology (especially the application of human embryos) on ethics and the strong public reaction to words also limit the application of cloning technology. However, the development of cloning technology in recent years shows that most countries in the world are unwilling to lag behind, and no one has given up the research on cloning technology. In my opinion, the great theoretical significance and practical value of cloning technology lies in that it urges scientists to speed up their research and bring the research and development of cloning technology to a climax, so as to better benefit mankind.
About people: At present, cloning technology is developing very rapidly. Governments and people all over the world have different views on cloning technology. Cloning technology has shown broad application prospects, including the following four aspects: (1) cultivating excellent varieties and producing experimental animals; (2) producing transgenic animals; (3) producing human embryonic stem cells for cell and tissue replacement therapy; (4) reproduction of endangered animal species, preservation and dissemination of animal species resources. In the near future, cloning technology will be used to treat mental diseases such as diabetes, stroke, cancer, AIDS, heart disease and Parkinson's syndrome, which will greatly change the existing organ transplantation theory and treatment methods and bring good news to mankind. However, cloning technology also has some disadvantages. Theoretically, cloning technology is still immature; In practice, the success rate of cloning animals is still very low, some individuals show physiological or immune defects, and the disability rate of animals is quite high, accompanied by premature aging. In addition, the impact of cloning technology (especially the application of human embryos) on ethics and the strong public reaction to words also limit the application of cloning technology. However, the development of cloning technology in recent years shows that most countries in the world are unwilling to lag behind, and no one has given up the research on cloning technology. In my opinion, the great theoretical significance and practical value of cloning technology lies in that it urges scientists to speed up their research and make the research and development of cloning technology reach a climax, so as to better serve mankind.
First, at the ecological level, gene replication caused by cloning technology will threaten the maintenance of gene diversity, and the evolution of organisms will go through a reverse process, that is, from complex to simple, which is extremely unfavorable to the survival of organisms. Secondly, at the cultural level, human cloning is a substitute and negation of natural reproduction, which breaks the self-discipline of biological evolution and has a typical anti-natural nature. It runs counter to the basic cultural trend of advocating the unity of man and nature and returning to nature. Thirdly, on the philosophical level, the realization of human self-replication and self-reproduction through cloning technology may lead to the disorder of human body-mind relationship. People's unrepeatable and irreplaceable personality rules have lost their uniqueness and the natural basis and biological premise of themselves and their personality characteristics because of a large number of copies.
First of all, consanguineous birth constitutes the social structure and social relations. Why are almost all different countries and races opposed to human cloning? The reason is that it is another birth mode. Nowadays, the education of children from single-parent families has attracted much attention, that is, paying attention to an emotional cultivation problem. People's growth is completed in the state of bisexual reproduction and parental rearing. It has been like this for thousands of years. How should society respond to the emergence of human cloning? What should be the relationship between cloned people and cloned people? Second, identity and social rights are difficult to distinguish. What if one day, 20 sons suddenly come to share your property, and their fingerprints and genes are the same? Is it necessary to engrave the marks such as Kronchuan A000 1 and Kronchuan A0002 on the forehead like the license plate photo to identify it? Third, people who support human cloning have a point: to solve the problem of infertility. But the next generation cloned by infertile people will still be infertile. You think you are excellent, but the cloned people may have completely different personalities and behaviors except blood type, appearance, fingerprints and genes. Can you guarantee that the cloned people are as good as you and will not go astray? In the research of human cloning, if there is abnormality, the defective cloned human can't be disposed of at will like cloned animals, which is also a trouble. Therefore, in the current environment, not only the concept and system, but also the whole social structure do not know how to accept human cloning. "