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
考研
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
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
admin
2019-06-11
16
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 a 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 swabbing saliva 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 Troy 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, either the Y chromosome inherited through men in a father’ s line or mitochondrial 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. In addition, the computer programs a company uses to estimate relationships may be patented and not subject to peer review or outside evaluation.
An appropriate title for the text is most likely to be
选项
A、Fors and Againsts of DNA Testing
B、DNA Testing and Its Problems
C、DNA Testing Outside the Lab
D、Lies Behind DNA Testing
答案
B
解析
主旨题。从文中我们没有看到作者明显的倾向,文中也没有两个阵营观点的陈述,故排除 A项。本文的中心不是实验室检验和个人购买工具去检验的矛盾,故排除C项。本文中出现的批 评都是针对各项检验的不准确性或者错误,并不存在欺骗的问题,故D项错误。因此,本题选择 B项。
转载请注明原文地址:https://kaotiyun.com/show/Qb9Z777K
0
考研英语一
相关试题推荐
AsformercolonistsofGreatBritain,theFoundingFathersoftheUnitedStatesadoptedmuchofthelegalsystemofGreatBritai
AsformercolonistsofGreatBritain,theFoundingFathersoftheUnitedStatesadoptedmuchofthelegalsystemofGreatBritai
AsformercolonistsofGreatBritain,theFoundingFathersoftheUnitedStatesadoptedmuchofthelegalsystemofGreatBritai
GooglealreadyhasawindowintooursoulsthroughourInternetsearchesanditnowhasinsightintoourailingbodiestoo.The
GooglealreadyhasawindowintooursoulsthroughourInternetsearchesanditnowhasinsightintoourailingbodiestoo.The
GooglealreadyhasawindowintooursoulsthroughourInternetsearchesanditnowhasinsightintoourailingbodiestoo.The
GooglealreadyhasawindowintooursoulsthroughourInternetsearchesanditnowhasinsightintoourailingbodiestoo.The
GooglealreadyhasawindowintooursoulsthroughourInternetsearchesanditnowhasinsightintoourailingbodiestoo.The
GooglealreadyhasawindowintooursoulsthroughourInternetsearchesanditnowhasinsightintoourailingbodiestoo.The
随机试题
依赖性(dependence)
引起牙龈黏膜肿胀的白血病是
接触性皮炎与急性湿疮的区别是
下肢静脉曲张的临床表现
总线能为多个部件服务,它可分时地发送与接受各部件的信息,所以可以把总线看成是()。
根据现行法律法规,建设工程对施工环境管理的基本要求有()。
新增固定资产与固定资产投资完成额()。
某日,甲到乙处订做一套西装,手工费300元。甲取走西装后一直没有支付手工费。数周后,甲又到乙处干洗一件大衣。甲支付干洗费后,乙拒绝交付大衣,理由是因甲未支付西装手工费,现对大衣行使留置权。乙的主张能否成立?试运用民法原理并结合我国有关法律规定加以分析。
设f(χ)=,求f(χ)的间断点并判断其类型.
Thereare______differencesbetweentheoryandpractice.
最新回复
(
0
)