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
37
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://kaotiyun.com/show/9vFO777K
0
考博英语
相关试题推荐
Theonlysafewayofdistinguishingbetweenedibleandpoisonousmushroomsistolearnto____theindividualspecies.
democracyimaginationdifferentflexibilityovercomeonlineoffertraditionalmodern
democracyimaginationdifferentflexibilityovercomeonlineoffertraditionalmodern
Priortothe20thcentury,manylanguageswithsmallnumbersofspeakerssurvivedforcenturies.Theincreasinglyinterconnected
Theimagewasriveting,asjusticeJohnPaulStevens,aChicagonative,presentedit.Agangmemberandhisfatherarehangingo
Thirty-onemillionAmericansareover60yearsofage,andtwenty-ninemillionofthemarehealthy,busy,productivecitizens.By
Everymorning,Alliewakesupandaccompaniesherfriendtothewashroom.Sheturnsonthelight,soapsupawashcloth,andbegi
Thereareanumberofformatsforreportingresearch,suchasarticlestoappearinjournals,reportsaddressedtofundingagenc
IworkasanofficeassistantinasmallbutgrowinggardenequipmentmanufacturingcompanyinCalifornia.Afewmonthsago,my
Inthe2006filmversionofTheDevilWearsPrada,MirandaPriestly,playedbyMerylStreep,scoldherunattractiveassistantfo
随机试题
患者女,32岁,幼年曾患麻疹,反复咳嗽、咳痰10年,多于晨起及夜间睡眠时咳大量黄痰,此次受凉后咳嗽加重,咳痰增多,为黄绿色痰,伴发热,间断咯血2次,每次量约30ml。查体:T38.2℃,P100次/分,双肺呼吸音粗,双下肺可闻及粗湿啰音。血常规:WB
A.嫉妒妄想B.罪恶妄想C.夸大妄想D.超价观念E.思维被洞悉妄想42岁男性患者,工人,夫妻关系好,钻研出许多新技术,写了不少文章,因情绪低落自杀未遂,说自己对不起领导,占公家的便宜要求受法律处分
粉状乳化炸药生产的火灾爆炸危险因素主要来自物质危险性,如生产过程中的高温、撞击、摩擦、电气和静电火花、雷电引起的危险性。下列关于粉状乳化炸药生产原料或成品在储存和运输中的危险因素的说法中,正确的是()。
对厂矿企业进行安全评价时,评价结果一般以表格形式表示,评价内容包括提出的问题、回答可能的后果、降低或消除危险性的安全措施。这种评价方法是()。
()指基金托管人以《证券投资基金法》、《证券投资基金会计核算办法》等法律、法规为依据,对管理人的账务处理过程与结果进行核对的过程。
物业服务采用包干制收费形式的,在市场不规范时,个别物业服务企业可能通过()来保证企业利润,业主的权益可能受到侵害。
《治安管理处罚法》第20条规定可以从重处罚的情形有()。
Thereareplentyofexpensiveandexclusiveclubstheworldoverwhocanannuallyrelieveyou______largequantitiesofmoneyin
Peopleusedtothinkthatlearningtwolanguagescreatedconfusioninthemind.Far【C1】______itwasthought,togetonerightth
Writethecorrectletter,A—I,nexttoQuestions16-20.Whereinthemuseumarethefollowingplaces?Gallery1
最新回复
(
0
)