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
63
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
A、Englishsettlers.B、Nativefarmers,herdsmenandhunters.C、Missionaries,civilservantsandprofessionalpeople.D、Germanset
A、Hehadmanybadhabits.B、Hehadfalseteeththatweremadeofwood.C、Heestablishedadentalschool.D、Heoncehuntedelepha
ClimateChangeClimatechangeiswithus.Adecadeago,itwasconjecture.Nowthefutureisunfoldingbeforeoureyes.Cana
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears,thefoodheeatsandthefriendswithwhomh
Theinterestthatcreativedramaticsgeneratesinstudiesisitsmostobviousadvantage.Thefactthatchildrendevelop【C1】_____
Onedayapoliceofficermanagedtogetsomefreshmushrooms.Hewasso【C1】______whathehadboughtthatheofferedto【C2】______
Onedayapoliceofficermanagedtogetsomefreshmushrooms.Hewasso【C1】______whathehadboughtthatheofferedto【C2】______
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsurvivalintheopen.Theyhadneitherthepowerful
A、Byplane.B、Bycar.C、Bytrain.D、Bybus.D注意对话中的转折连词but,but之后的内容才是说话者的主要意思,听到takingabus便可选择答案D.Bybus。
随机试题
在我国,党和国家领导人多次强化为人民服务的理念,胡锦涛提出
InBritainpeopledrive______theleft.
有助于鉴别胆管癌与HCC诊断的最佳征象是
诊断真假性胃酸缺乏症应选用
能为20种氨基酸编码的密码子有
A.固阴煎B.圣愈汤合血安胶囊C.逐瘀止崩汤D.调肝汤E.固冲汤崩漏患者量多如崩,色淡质稀,不思饮食,四肢不温,面浮肢肿,宜选用的方药是()。
丽岛实业是香港一家餐饮企业集团,已经在香港经营餐饮业30余年。丽岛实业在香港开设了20多家以“丽岛大酒楼”、“丽岛皇宫”等命名的传统粤菜酒楼,丽岛实业的酒楼面向中、高档消费者,虽然菜式价格高于一般粤菜酒楼,但其菜式以高质量取胜,生意门庭若市,已经形成了一批
关于国画,以下说法不正确的是()。
学生良好思想品德的形成发展或不良品德的克服要经过多次的培养或矫正训练,不能操之过急。这表明德育要遵循()。
设f(x)=且f"(0)存在,求a,b,c.
最新回复
(
0
)