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
2016-01-05
69
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.
PTK is used to
选项
A、locate one’ s birth place.
B、promote genetic research.
C、identify parent-child kinship.
D、choose children for adoption.
答案
C
解析
推断题。从文中第三段adopted children can use to find their biological relatives and familiescan use to track down kids put up for adoption.可以看出,正确答案为C项。A项比较具有迷惑性,从第三段后半句我们可以看出“PTK最近惹怒了很多谱系学家,他们支持用PTK来探寻一个家族的祖籍”。可以看出PTK没有被用于寻找人的出生地。B项、D项文中未提及。
转载请注明原文地址:https://kaotiyun.com/show/gtsZ777K
0
考研英语一
相关试题推荐
Afewyearsago,JamesGreenbegantodreadwork.HedraggedhimselfoutofbedeverymorningandploddedthroughNewYork’sPen
Throughoutthetwentiethcentury,from1900onwards,peoplehavedreamtofthetechnologicaladvancesthattheadventofthenew
Dreamsaresaidtobethewindowtothemind.Throughthestudyofdreams,wecancatchglimpsesintowhatoursubconsciousmind
TheInternet,e-commerceandglobalizationaremakinganeweconomicerapossible.Bythemiddleofthe21stcentury,capitalis
ThelowerhouseofAustralia’sParliamentpassedsweepingchangesinimmigrationpolicyonWednesdaythataremeanttodiscourag
ThelowerhouseofAustralia’sParliamentpassedsweepingchangesinimmigrationpolicyonWednesdaythataremeanttodiscourag
Conventionalwisdomsuggeststhatstudentsperformbetterwhentheyareenrolledinsmallerclasses.Butnewresearchandadvoca
AttheendofhisworkdayinsteamymidtownManhattan,JoelTerrycravesrelaxingoutdoors.Butthesedays,insteadofstarting
AttheendofhisworkdayinsteamymidtownManhattan,JoelTerrycravesrelaxingoutdoors.Butthesedays,insteadofstarting
Customhasnotcommonlybeenregardedasasubjectofanygreatmoment.Theinnerworkingsofourbrainswefeeltobeuniquely
随机试题
描述组织迈向全球时可以采用的不同方法。
下列关于租船运输的说法不正确的是()
A.精神病学B.精神病C.精神障碍D.精神卫生E.神经疾病在认知、情感、意志和行为等方面有明显障碍,致使患者歪曲地反映现实,不能适应正常的生活;具有危害自身和社会的行为者,临床上称
损骨的表现:瘰疬初起的表现:
简述会计科目的分类。
对进口列入《限制进口类可用作原料的废物目录》及《自动进口许可管理类可用作原料的废物目录》的废物,报关单位向海关申报时应当提交“废物进口许可证”;对进口未列入上述目录的废物,国家规定()。
图为某气象台发布的墨西哥湾及邻近海区飓读图回答此时降雨集中分布在飓风东北部的主要原因是()。
以下有关世界贸易组织(WTO)的表述中,不正确的一项是:
2010~2015年,中国国际出口带宽增速高于30%的年份有多少个?
下列选项中,属于我国非规范性法律文件的是()。(2014单2)
最新回复
(
0
)