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
2023-12-12
42
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. Strainsof 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 fights 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/3267628.html
相关试题推荐
SomeAspectsoftheResearchNeedtoBalanceI.TheproblemA.Whatkindofprob
SomeAspectsoftheResearchNeedtoBalanceI.TheproblemA.Whatkindofprob
SomeAspectsoftheResearchNeedtoBalanceI.TheproblemA.Whatkindofprob
SomeAspectsoftheResearchNeedtoBalanceI.TheproblemA.Whatkindofprob
TheBlackDeathsweptthroughEnglandinthesummerof______withoutwarning.A、1
InBritaintheaveragerainfallthroughthewholeyearisover______mm.A、2,000B
OnlineUniversityDegreesThroughDistanceEducationMoreandmoreuniversities
OnlineUniversityDegreesThroughDistanceEducationMoreandmoreuniversities
OnlineUniversityDegreesThroughDistanceEducationMoreandmoreuniversities
OnlineUniversityDegreesThroughDistanceEducationMoreandmoreuniversities
随机试题
______thediagramshows,thesumspentontobaccoisnearlyaslargeasthatspe
【S1】[br]【S8】F此处应填入一个名词,选项中的名词有similarities,selfishness,rituals和characteristics
人类社会发展是“自然历史过程”的含义有()A.人类社会的发展也像自然界一样,是客
货币市场有许多子市场,下列不属于货币市场的是()。A.票据贴现市场 B.银行同
元认知策略总是和认知策略一起起作用。()
A.Pa026.65kPa(50mmHg) D.两者均有Ⅰ型呼吸衰竭()
共用题干 TheDifferencebetweenManandCom
独立避雷针的接地电阻测试值应在()以上,当独立避雷针导通电阻值低于()时,需进
太平天国运动对中国近代化产生了一定影响,这主要表现在它()。 A.否定了封建土
用于组织脱水的治疗方案是A.可予10%~25%葡萄糖注射液滴注,每日100g葡萄
最新回复
(
0
)