医学英语文献阅读
applications
1、in food and argricultural industries ----higher nutrition value ----higher growing speed ----insect and disease resistance
医学英语文献阅读
医学英语文献阅读
Definition
Genetic engineering, also called genetic modification, is the direct manipulation(操作) of an organism's genome using biotechnology. New DNA may be inserted in the host genome by first isolating and copying the genetic material of interest using molecular cloning methods(分 子克隆技术) to generate a DNA sequence, or by synthesizing the DNA, and then inserting this construct into the host organism. Genes may be removed, or "knocked out", using a nuclease(核酸酶). Genetic engineering is the most important part of bioengineering(生物工程)
• 打破自然界物竞天择的生存法 则,可能导致物种数量异常,破 坏生态环1、The government should impose legislation and regulations on genetic engineering. 2、Average people should think twice before allowing genetic foods and drugs to enter their home,especially those unlabeled ones. 3、International cooperation should be made to ensure the security of biotechnology.