首页
登录
职称英语
Research into DNA has had a significant impact on medicine. Through recombina
Research into DNA has had a significant impact on medicine. Through recombina
游客
2023-12-19
30
管理
问题
Research into DNA has had a significant impact on medicine. Through recombinant DNA technology, scientists can modify microorganisms so that they become so-called factories that produce large quantities of medically useful drugs. This technology is used to produce insulin, which is a drug used by diabetics, and interferon, which is used by some cancer patients. Studies of human DNA are revealing genes that are associated with specific diseases, such as breast cancer. This information is helping physicians to diagnose various diseases, and it may lead to new treatments. For example, physicians are using a technology called chimeriplasty, which involves a synthetic molecule containing both DNA and RNA strands, in an effort to develop a treatment for a form of hemophilia.
Forensic science uses techniques developed in DNA research to identify individuals who have committed crimes. DNA from semen, skin, or blood taken from the crime scene can be compared with the DNA of a suspect, and the results can be used in court as evidence.
DNA has helped taxonomists determine evolutionary relationships among animals, plants, and other life forms. It is useful for this purpose, because closely related species have more similar DNA than do species that are distantly related. One surprising finding to emerge from DNA studies is that vultures of the Americas are more closely related to storks than to the vultures of Europe, Asia, or Africa.
Techniques of DNA manipulation are used in farming, in the form of genetic engineering and biotechnology. Strains of crop plants to which genes have been transferred may produce higher yields and may be more resistant to insects. Cattle have been similarly treated to increase milk and beef production, as have hogs, to yield more meat and less fat.
Despite the many benefits offered by DNA technology, some critics argue that its development should be monitored closely. One fear raised by such critics is that DNA fingerprinting could provide a means for employers to discriminate against members of various ethnic groups. Critics also fear that studies of people’ s DNA could permit insurance companies to deny health insurance to those people at risk for developing certain diseases.
The use of DNA technology in agriculture has also sparked controversy. Some people question the safety, desirability, and ecological impact of genetically altered crop plants. In addition, animal rights groups have protested against the genetic engineering of farm animals.
Despite these and other areas of disagreement, many people agree that DNA technology offers a mixture of benefits and potential hazards. Many experts also agree that an informed public can help assure that DNA technology is used wisely. [br] According to the passage, it can be deduced that______.
选项
A、in the future DNA technology will dominate the industry and agriculture
B、in the future DNA technology will disappear from the world
C、in the future DNA technology will be a dilemma in a long time
D、in the future the human beings derived from the DNA technology will take over the earth
答案
C
解析
最后一段讲到了DNA使用有利有弊,短期内无法得出最终解决方法,故选C最为贴切。
转载请注明原文地址:https://tihaiku.com/zcyy/3285783.html
相关试题推荐
Someconsumerresearchersdistinguishbetween"rational"motivesand"emotio
Theideathatgovernmentshouldregulateintellectualpropertythroughcopyr
Inhisresearch,whatdidPeterWilliamsfindabouttraininginsmallfirms?[br
Inhisresearch,whatdidPeterWilliamsfindabouttraininginsmallfirms?[br
Inhisresearch,whatdidPeterWilliamsfindabouttraininginsmallfirms?[or
【B1】[br]【B4】timewhenresearchers→timeresearchers本题考查定语从句。在定语从句当中,以time和momen
Howcouldtheresearchersexplorethemummynow?[audioFiles]audio_ezem_026(2009
Therelationshipbetweenthehomeandmarketeconomieshasgonethroughtwo
Cultureshockisapainfulexperiencewegothroughwhenweencountermanyn
Cultureshockisapainfulexperiencewegothroughwhenweencountermanyn
随机试题
Theproposalofasinglesix-yeartermforthePresidentoftheUnitedStates
Inductivereasoningistheprocessbywhichwemakeanecessarylim-(1)____
AVerySpecialDogA)Itis8:15a.m.Aflightlandsa
()是合同签订中最重要的内容和环节,是合同签订的前提。A.合同分析 B.
硝苯地平与普萘洛尔合用可拮抗的副作用是()A.反射性心率加快 B.心搏出
下列关于城市生态系统物质循环的表述,哪项是错误的?( )A.生态恢复不是物种的
通过查验原始质量凭证认定产品质量状况,一般不要求()。 A.能证实供方原始凭
A(n)___fiveyearsago,Pangkorboasted
施工平面图的内容有()。A.主要结构物平面位置 B.施工防排水临时设施 C.
女性,45岁。右乳1.5cm×1.0cm肿块,活动度大。穿刺细胞学诊断为:乳腺癌
最新回复
(
0
)