首页
登录
职称英语
Research into DNA has had a significant impact on medicine. Through recombinan
Research into DNA has had a significant impact on medicine. Through recombinan
游客
2023-12-16
15
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 fife 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] What is the main idea of the (last three paragraphs)?
选项
A、DNA’s future tendencies.
B、DNA’s controversy.
C、DNA’s potentials.
D、DNA’s social issues.
答案
D
解析
后三段讲的是DNA应用在社会上引起的一些问题和争论,故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3279041.html
相关试题推荐
LibraryLookingupmaterialforaresearchpaperinal
LibraryLookingupmaterialforaresearchpaperinal
LibraryLookingupmaterialforaresearchpaperinal
LibraryLookingupmaterialforaresearchpaperinal
LibraryLookingupmaterialforaresearchpaperinal
LibraryLookingupmaterialforaresearchpaperinal
Historically,executionhasservedasasignificantformofpunishmentforde
Historically,executionhasservedasasignificantformofpunishmentforde
Historically,executionhasservedasasignificantformofpunishmentforde
Historically,executionhasservedasasignificantformofpunishmentforde
随机试题
As,afterhisdeath,hedefeatedtheforcesofinjustice,_____thepositioninar
符合我国著作权法关于“合理使用”规定的行为有()等。A.为个人学习、研究或者
关于受精卵,不恰当的是A.经桑葚胚发育为晚期囊胚 B.在输卵管运送期间分裂成桑
(2017年)下列各项因素中,通常影响注册会计师是否实施函证的决策的有()
以下关于调解协议书说法,正确的是( )。A.它是调解委员会单方的意思表示 B
药物不良反应多潘立酮()A.睡眠障碍 B.性功能障碍 C.黑便 D.溢乳
企业重组时发生的推广公司新形象的营销成本属于与重组有关的直接支出。()
自定义筛选后,只显示符合条件的记录,并不改变原有记录。()
项目监理机构监理人员应由()组成,且专业配套、数量应满足建设工程监理工作需要,
某安全评价机构承担了一火电厂新建液氨储罐区项目的安全评价工作。评价人员在危险和有
最新回复
(
0
)