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 that
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
admin
2017-07-31
35
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 Fog, 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 $ 2500.
Among the most popular: paternity and kinship testing, which adopted children can use to find their biological relatives and latest rage a many 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 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, either the Y chromosome inherited through men in a father’s line or mitochondrial DNA, which a 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.
In the last paragraph, a problem commercial genetic testing faces is______.
选项
A、disorganized data collection
B、overlapping database building
C、excessive sample comparison
D、lack of patent evaluation
答案
A
解析
本题的依据句是第6段的第2句话:Databases used by some companies don’t rely on data collected systematically but rather lump together information from different research projects.从中可知A项为正确答案。
转载请注明原文地址:https://www.kaotiyun.com/show/9vFO777K
0
考博英语
相关试题推荐
Inadditiontoredistributingincomes,inflationmayaffectthetotalrealincomeandproductionofthecommunity.Anincreasein
ForthepeoplewhohavenevertraveledacrosstheAtlanticthevoyageisafantasy.Butforthepeoplewhocrossitfrequentlyo
Theyaremeticulousinwork,wellawareacarelessmistakewillcostthecompanymillionsofpounds.
Thefalsebanknotesfooledmanypeople,buttheydidnot__tocloseexamination.
Everymorning,Alliewakesupandaccompaniesherfriendtothewashroom.Sheturnsonthelight,soapsupawashcloth,andbegi
Inrecentyears,manyAmericansofbothsexesandvariousageshavebecomeinterestedinimprovingtheirbodies.Theyhavebecom
AnewlookatanasteroidorbitingthesunshowsitcouldpossiblysmashintotheEarthwithtremendousforce.Butexpertssayt
Supposeyougointoafruiterer’sshop,wantinganapple-youtakeupone,andonbitingityoufinditissour;youlookatit,
Inthe2006filmversionofTheDevilWearsPrada,MirandaPriestly,playedbyMerylStreep,scoldherunattractiveassistantfo
随机试题
Thefigureofworldilliteracywasobtainedby______.ThefigureofilliteracyinBritaincomprises______.
急性B淋巴细胞白血病的细胞免疫标志是
采用眼眶CT冠状位检查的原因之一是
A、仓廪之官,五味出焉B、中正之官,决断出焉C、受盛之官,化物出焉D、相辅之官,治节出焉E、作强之官,技巧出焉小肠者
A.塞来昔布B.地高辛C.依那普利D.洛伐他汀E.米力农抑制Na+,K+一A11P酶的药物是()。
【背景资料】某闸室基础开挖是闸室分部工程中的一部分,其中右岸边墩基础开挖单元工程的质量评定表部分内容如表1所示。注:1.“▲”后的项目为主要检查项目。2.带“一”为未抽检值。【问题】写出评定意见及单元质量评定等级。
某大型泵站施工需进行一段河流改道作为其引渠,其相关资料见下表,则最终发包人应向承包人支付的该段河流改道土方开挖的价款应为()万元。
某公司2017年3月的应收账款平均余额为480万元,信用条件为N/30,过去三个月的赊销情况为:1月份240万元;2月份180万元;3月份320万元,每月按30天计算,则应收账款的平均逾期天数为()天。
Whathappenstotreeseachyear?
A、Typesofbusinessorganizations.B、Managementofthesoleownership.C、Complexityofthecorporation.D、Differencesbetweenth
最新回复
(
0
)