首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
DNA Testing DNA testing reveals the genes of each individual person. Since ...
DNA Testing DNA testing reveals the genes of each individual person. Since ...
admin
2020-12-24
35
问题
DNA Testing
DNA testing reveals the genes of each individual person. Since the early twentieth century, scientists have known that all human characteristics are contained in a person’s genes and are passed from parents to children. Genes work as a chemical instruction manual for each part and each function of the body. Their basic chemical element is called DNA, a copy of which can be found in every cell. The existence of genes and the chemical structure of DNA were understood by the mid-1900s, but scientists have only recently been able to identify a person from just a drop of blood or a single hair.
One of the most important uses of DNA testing is in criminal investigation. The very first use of DNA testing in a criminal case was in 1985 in Great Britain, when a man confessed to killing a young woman in the English countryside. Because police had found samples of the killer’s DNA at the scene of the crime, a biologist suggested that it might be possible to compare that DNA to some from the confessor’s blood. To everyone’s surprise, the tests showed that he was not the killer. Nor was he guilty of a similar murder that had happened some time earlier. At that point he admitted that he had confessed to the crimes out of fear and police pressure. The police then asked 5,000 local men for samples of their blood, and DNA testing revealed that one of them was the real murderer, so the first man was set free.
In 1992, two law professors, Peter Neufeld and Barry Scheck, decided to use DNA evidence to help set free such mistakenly convicted prisoners. With the help of their students, they created a not-for-profit organization called the Innocence Project. Most of their clients are poor men, many from racial and ethnic minorities. In fact, studies have shown that U.S. judges and juries are often influenced by racial and ethnic background, and that people from minority groups are more likely to be convicted. Some of these men had been sentenced to death, a form of punishment used in thirty-eight states out of fifty (as of 2006). For most of these prisoners, their only hope was another trial in which DNA testing could be used to prove their innocence.
Between 1992 and 2006, the Innocence Project helped free 100 men. Some of these prisoners had been in jail for ten, twenty years or more for crimes they did not commit. However, the goal of the Innocence Project is not simply to set free those who are wrongfully in jail. They also hope to bring about real changes in the criminal justice system.
In Illinois in the late 1990s, a group of journalism students at Northwestern University were able to bring about such a change in that state. They began investigating some Illinois prisoners who claimed to be innocent. Through DNA testing, the students were able to prove that in fact the prisoners were not guilty o the crimes they had been accused of. Thirteen of these men were set free, and in 2000, Governor Ryan of Illinois decided to cases.
The use of DNA in criminal cases is still being debated around the world. Some fear that governments will one day keep records of everyone’s DNA, which could put limits on the privacy and freedom of citizens. Other people mistrust the science of DNA testing and think that lawyers use it to get their clients free whether or not they are guilty. But for those whose innocence has been proven and who are now free men, DNA testing has meant nothing less than a return to life. And with the careful use of DNA testing, no innocent person should ever be convicted again.
What is the author’s attitude towards DNA testing?
选项
A Negative.
B Positive.
C Suspicious.
D Indifferent.
答案
B
解析
纵观全文,作者对DNA testing明显是持肯定态度的。
转载请注明原文地址:https://ti.zuoweng.com/ti/RPMQKKKQ
相关试题推荐
DNATesting DNAtestingrevealsthegenesofeachindividualperson.Since...
DNATesting DNAtestingrevealsthegenesofeachindividualperson.Since...
DNATesting DNAtestingrevealsthegenesofeachindividualperson.Since...
DNATesting DNAtestingrevealsthegenesofeachindividualperson.Since...
Featuressuchasheight,weight,andskincolordifferfromindividualtoindiv...
DNATesting DNAtestingrevealsthegenesofeachindividualperson.Since...
DNATesting DNAtestingrevealsthegenesofeachindividualperson.Since...
DNATesting DNAtestingrevealsthegenesofeachindividualperson.Since...
DNATesting DNAtestingrevealsthegenesofeachindividualperson.Since...
共用题干 第一篇DNATestingDNAtestingrevealsthegenesofeachindividualperson.S...
随机试题
出版物发行质量是出版物发行企业的()。A、基础B、底线C、根本保证D、生命线D
投资者卖出一个执行价格为40元的看涨期权,同时买入一个执行价格为50元的看涨期权
国家基本药物目录中,中成药的分类依据是
根据《建设工程工程量清单计价规范》GB50500-2013,当实际增加的工程量超
门厅顶面水平玻璃应采用()。
在LM曲线不变的情况下,政府支出的增加会引起收入增加,利率上升。
下列各项,不引起肝细胞性黄疸的是A:疟疾B:急性甲型肝炎C:中毒性肝炎D:钩端螺旋体病E:肝癌
关于子宫颈的解剖学,下列哪项不正确A子宫颈分为阴道上部和阴道部B宫颈峡部下端是组织学内口C宫颈管黏膜上皮在组织学内口处由柱状上皮变为鳞状上皮D宫颈
20世纪80年代以来,各国银行间的竞争日益激烈,而西方各国关于银行资本定义不统一,资金充足率也没有规范标准。1988年7月美国、英国、法国、加拿大等12国...
红叶评估公司受托对某公司甲进行评估,甲公司拥有乙公司非上市普通股股票10万股,每股面值1元。在持有期间,每年股利收益率均在15%左右。评估人员对该乙公司进...