克隆的看法
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谈谈你对克隆人的看法 With the rapid development of science and technology, I think, the generation and application of the cloning technique is an inevitable trend, we should recognize and support it. We can not deny, breakthrough in cloning technology, bring benefit to mankind. One is the use of cloning, biological technology, changes in crop genotypes, producing a large number of disease resistance, insect resistance, alkali resistance and other new varieties, thereby greatly increasing the output of crops. The two is to cultivate a large number of fine varieties of livestock, such as the cultivation of good meat cattle, sheep and pigs, also can get some high level of milk production, and rich in nutrients required for the cows body. Three is to have a major impact on the medical and health work, such as relying on molecular cloning technology, make clear the pathogenic gene, proposed the molecular biology mechanism of generated transgenic sheep disease; drug protein will be a head of milk containing the hemophilia treatment were cloned, can better meet the needs of hemophilia dietotherapy; seek wider source for organ transplantation the organs, tissues and the immune system genes in the animal body, long needed in organs of the human body, can reduce the immune rejection, improve the success rate of transplantation. Four is Protect environment and endangered animals and plants, in order to reproduce the species cloning. Five is to provide a more suitable animal for medical research, greatly improve the precision and safety test. And so on. As we know, everything is two-sided, cloning technology in while bringing benefits to us, there are a lot of our shortcomings can not be ignored. For example: in theory, cloning technology is still immature; in practice, animal cloning success rate is very low, the individual performance of physical or immunodeficiency partial birth of the animal, and the disability rate is very high and is accompanied by premature aging phenomenon. But I think, to bring its benefits far outweigh its disadvantages. As long as we can correctly understand and use the cloning technology, I believe, it will lead to unimaginable benefits to us, whether personal or social. 随着科学技术的迅猛发展，我认为，克隆技术的产生和应用是必然的趋势，我们应当认可并支持它。 我们不可否认，克隆技术取得突破，给人类带来极大的好处。一是利用克隆等生物技术，改变农作物的基因型，产生大量抗病、抗虫、抗盐碱等的新品种，从而大大提高农作物的产量。二是培育大量品种优良的家畜，如培养一些肉质好的牛、羊和猪等，也可以培养一些产奶量高，且富含人体所需营养元素的奶牛。三是对医疗保健工作产生重大影响，如依靠分子克隆技术，搞清致病基因，提出疾病产生的分子生物学机制；将一头奶中含有治疗血友病的药物蛋白的转基因羊进行克隆，则可以较好地满足血友病人食疗的需要；为器官移植寻求更广泛的来源，将人的器官组织和免疫系统的基因导入动物体内，长出所需要的人体器官，可降低免疫排斥反应，提高移植成功率。四是为保护环境和濒危动植物，以克隆技术再现物种。五是为医学研究提供更合适的动物，大大提高试验的精确度和安全性。等等。 正如我们所知，事物都是具有双面性的，克隆技术在给我们带来好处的同时，也有很多我们不可忽视的弊端。例如：在理论上，克隆技术还很不成熟；在实践中，克隆动物的成功率还很低，生出的部分个体表现出生理或免疫缺陷，而且动物的残废率相当高并伴有早衰现象等。但我认为，它的给人们带来的好处远远大于它的坏处。只要我们能够正确地认识并使用克隆技术，我相信，它将会给我们带来无法想象的益处，无论是个人还是社会。 本文来源：https://www.wddqw.com/doc/b78f00f7a68da0116c175f0e7cd184254b351b9f.html