首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
It happened one morning 20 years ago. British scientist Alec Jeffrey stumbled upon DNA fingerprinting: He identified the pattern
It happened one morning 20 years ago. British scientist Alec Jeffrey stumbled upon DNA fingerprinting: He identified the pattern
admin
2013-01-22
33
问题
It happened one morning 20 years ago. British scientist Alec Jeffrey stumbled upon DNA fingerprinting: He identified the patterns of genetic(基因的) material that are unique to almost every individual. His discovery changed everything from the way we do criminal investigations to the way we decide family law. But the professor of genetics at the University of Leicester, UK, is still surprised, and a bit worded, by the power of the technology he released upon the world.
The patterns within DNA are unique to each individual, except identical twins, who share the same pattern. The ability to identify these patterns has been used to convict murderers and to clear people who are wrongly accused. It is also used to identify the victims of war and settle disputes over who is the father of a child.
Jeffrey said he and his colleagues made the discovery by accident while tracking genetic variations. But, within six months of the discovery, genetic fingerprinting had been used in an immigration case, to prove that an African boy really was his parents’ son. In 1986, it was used for the first time in a British criminal case: It cleared one suspect after being accused of two rapes and murders and helped convict another man.
DNA testing is now very common. In Britain, a national criminal database established in 1995 now contains 2.5 million DNA samples(样本). The U.S. and Canada are developing similar systems. But there are fears about the stored DNA samples and how they could be used to harm a person’s privacy. That includes a person’s medical history, racial origin or psychological profile. "There is the long-term risk that people can get into these samples and start getting additional information about a person’s paternity or risk of disease," Jeffrey said.
DNA testing is not an unfailing proof of identity. Till, it is considered a reasonably reliable system for determining the things it is used for. Jeffrey’s estimates(估计) the probability of two individuals’ DNA profiles matching in the most commonly used tests at between one in a billion or one in a trillion.
选项
A、the discovery of fingerprinting by Jeffery
B、the practice of fingerprinting in court
C、the fingerprinting in the present situation
D、the merits and demerits of fingerprinting
答案
D
解析
文章主旨题。这一题涉及到整篇文章的大体内容,A,B,C三个选项的内容在文中都有涉及,但是文章的主旨并不在于单单说明这几点。我们从后面的文章中可以看到,DNA指纹的发现既有它的好处也有它的坏处,因此,答案是D。
转载请注明原文地址:https://jikaoti.com/ti/TOkFFFFM
0
大学英语六级
相关试题推荐
A、Theyonlyhaveeffectonrealpatients.B、Theyaremoreorlesseffectiveformostpeople.C、Theyarethebestmethodseverfo
A、Toliveamorecomfortablelife.B、Togiveperformances.C、Tobeapupilofafamousviolinist.D、Toenterafamousuniversity
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendpeopletocollegesto【36】graduatingstudentswiththe
Dogswerefirstdomesticatedfromwolvesatleast17,000yearsago,butperhapsasearlyas150,000yearsagobaseduponrecent
Internationalairlineshaverediscoveredthebusinesstravelers,themanorwomanwhoregularlyjetsfromcountrytocountryas
A、Enjoyable.B、Inspiring.C、Moving.D、Dull.D对话中女士提到Ifeltsleepy(我昏昏欲睡),DDull对应sleepy,故为答案。
A、Itwillincreaseclasssize.B、Itlimitsinteractionamongstudents.C、Itrequirestoomuchtravelingtodifferentcities.D、I
A、Gotouniversity.B、VisitBob.C、Callonhersister.D、Attendaparty.D选项均以原形动词开头以及其中的Callonhersister表明,本题可能与女士的打算或建议有关。由女
A、Shewasinvitedonlyfortheweekend.B、Theweatherwastoohot.C、Shehadanappointment.D、Shehadschoolworktodo.D
随机试题
下列证据中属于证据理论分类中所讲的人证的是
清平之治孔奋字君鱼,扶风茂陵人也。曾祖霸,元帝时为侍中。奋少从刘歆受《春秋左传》,歆称之,谓门人曰:“吾已从君鱼受道矣。”遭王莽乱,备与老母、幼弟避兵河西。建武五年,河西大将军窦融请奋署议曹掾,守姑臧长。八年,赐爵关内侯。时天下扰乱,惟
在中华人民共和国境内从事各类房屋建筑及其附属设施的建造、装修装饰和与其配套的线路、管道、设备的安装,以及城镇市政基础设施工程的施工,建设单位在开工前必须向工程所在地的人民政府申请领取施工许可证。()
不得封闭在吊顶上的是()。
依法设立的公司,由公司登记机关发给《企业法人营业执照》。公司营业执照签发日期为公司成立日期。()
除恋爱自由、婚姻自主以外,下列选项符合婚姻家庭道德要求的还有()。
人权的法律保障包括宪法保障、立法保障、行政保护和司法保障。其中,人权保障的最后防线是()
=________.
在一个宏的操作序列中,如果既包含带条件的操作,又包含无条件的操作,则没有指定条件的操作则会()。
Work-lifebalance.Inmostcorporatecircles,it’sthesortofphrasethatgiveshard-chargingmanagersthehives,bringingtom
最新回复
(
0
)