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 is a wise father that knows his own child, but today a man can boost his paternal (fatherly) wisdom — or at least confirm tha
It is a wise father that knows his own child, but today a man can boost his paternal (fatherly) wisdom — or at least confirm tha
admin
2012-01-27
64
问题
It is a wise father that knows his own child, but today a man can boost his paternal (fatherly) wisdom — or at least confirm that he’s the kid’s dad. All he needs to do is shell out $30 for paternity testing kit (PTK) at his local drugstore — and another $120 to get the results.
More than 60,000 people have purchased the PTKs since they first become available without prescriptions last years, according to Doug Fogg, chief operating officer of Identigene, which makes the over-the-counter kits. More than two dozen companies sell DNA tests directly to the public, ranging in price from a few hundred dollars to more than $2,500.
Among the most popular: paternity and kinship testing, which adopted children can use to find their biological relatives and families can use to track down kids put up for adoption, DNA testing is also the latest rage among passionate genealogists — and supports businesses that offer to search for a family’s geographic roots.
Most tests require collecting cells by webbing saliva (唾液) in the mouth and sending it to the company for testing. All tests require a potential candidate with whom to compare DNA.
But some observers are skeptical. "There is a kind of false precision being hawked by people claiming they are doing ancestry testing," says Trey Duster, a New York University sociologist. He notes that each individual has many ancestors — numbering in the hundreds just a few centuries back. Yet most ancestry testing only considers a single lineage (世系), either the Y chromosome (染色体) inherited through men in a father’s line or mitochondrial (线粒体) DNA, which is passed down only from mothers. This DNA can reveal genetic information about only one or two ancestors, even though, for example, just three generations back people also have six other great-grandparents or, four generations back, 14 other great-great-grandparents.
Critics also argue that commercial genetic testing is only as good as the reference collections to which a sample is compared. Databases used by some companies don’t rely on data collected systematically but rather lump together information from different research projects. This means that a DNA database may have a lot of data from some regions and not others, so a person’s test results may differ depending on the company that processes the results.
The first two paragraphs of the passage shows PTK’s______.
选项
A、easy availability
B、flexibility in pricing
C、successful promotion
D、popularity with households
答案
A
解析
根据题干中的The first two paragraphs可将本题出处定位于前两段。首段提到,男士在附近的药店里花30美元就可买到一个父子关系测试包(PTK)。第二段首句提到无需处方就可以买到PTK,第二句强调许多公司直接向公众出售基因测试工具。由此可知,前两段提到PTK时主要说的是它很容易买得到,故答案为[A]。第二段首句虽提到有6万人购买PTK,但也强调是因为PTK很容易购买得到,所以才有那么多人买,故排除[D]。
转载请注明原文地址:https://kaotiyun.com/show/1dy7777K
0
大学英语四级
相关试题推荐
Peopleappeartobeborntocompute.Thenumericalskillsofchildrendevelopsoearlythatitiseasytoimagineaninternalcl
Peopleappeartobeborntocompute.Thenumericalskillsofchildrendevelopsoearlythatitiseasytoimagineaninternalcl
A、He’dliketocomealong.B、Heknowshiswayaroundtheharbor.C、Thewarmweatherisquitepleasant.D、Theridewilltakeall
A、Onboardoftheplane.B、Inatheater.C、Inanoffice.D、Inthesubway.A推理判断题。女士感到非常生气,因为在飞机上,机长不停地广播地名,使她不能人睡。男士说对于那些从未坐过此次班
ClimateChangeClimatechangeiswithus.Adecadeago,itwasconjecture.Nowthefutureisunfoldingbeforeoureyes.Cana
Departmentstoresarelargeretailstoressellingmanydifferentkindsofmerchandisearrangedin【B1】______departments.Suchsto
Inrecentyearn,Israeliconsumershavegrownmoredemandingasthey’vebecomewealthierandmoreworldly-wise.Foreigntraveli
RobSapp,27,fromKent,lovedgameswhenhewasattendingschool.Infact,helovedgamessomuchthathedecidedtobecomeaP
Itisnogoodwaitingforthebus,___________(我们不妨走回家吧).
Ilovetravelingbytrain.Fast【B1】______,slowlocaltrainswhichstopateverystation,【B2】______trainstakingbusinessmento
随机试题
根据五行生克乘侮规律判断疾病的转归,下列为“逆”的有
病原菌抗原的检测结果是可用于诊断但无法确定菌种或菌型。()
骨盆腔是指
价值工程活动程序中的基本步骤是()。
扩张性财政政策措施包括()。
电子信息系统机房的防静电地板、地面的表面电阻或体积电阻值应为(),且应具有防火、环保、耐污耐磨性能。
下列关于信用风险的说法中,正确的是()。
下列各句中标点符号使用全都正确的一项是()。
据港媒曝,在香港逾半的受访白领中,每周加班至少三日,还有人曾连续上班十八天才休假,其中大部分人在下班后、休假时也要接听工作电话或接收邮件,更因工作压力过大而出现“脑筋短路”等情况。网友对此戏称:“原来加班太多,容易‘脑残’。”以下哪项如果为真,最能支持网友
A、Theywerenaughty.B、TheyhatedMrFlowers.C、MrFlowersdidn’tletthemwatchflowers.D、TheyjustwantedtoplayajokeonM
最新回复
(
0
)