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
医学
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
2018-03-26
49
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 year, 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 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 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.
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
事实细节题。从最后一段第二句我们可以看出“一些公司使用的数据库并不依赖于系统的数据收集而是把不同研究机构收集的信息合在一起。这就意味着处理数据的公司不同,所用DNA数据库也会不同。”文中并未提及数据是否重合,B无根据。C、D文中没有体现。
转载请注明原文地址:https://kaotiyun.com/show/DwT3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
男性,18岁,因牙龈肿胀,牙龈渗血2周入院,体格检查发现中度贫血貌,牙龈弥漫肿胀,有少许渗血,胸骨轻压痛,腹平软,肝脾未触及。血象:白细胞17.5×109/L、红细胞2.05×1012/L、血红蛋白68g/L,血小板20×109/L。骨髓象:骨髓有核细胞增
除了慢性进行性膀胱炎症状外,诊断泌尿系结核的根据是
下列哪项是胆囊癌的癌前病变
男性,30岁。呼吸困难2天就诊,发病前有鼻痒,喷嚏。既往有类似病史。体检:呼吸20次/分,双肺可闻及呼气末哮鸣音,心率96次/分,律齐。动脉血气分析,PaCO238mmHg,PaO296mmHg,pH7.39。根据临床表现和血气分析结果,其病情程度分级
女性,68岁。原有肺心病病史。受凉后发热伴咳脓痰,发绀加重,次日神志模糊,嗜睡,血压90/67.5mmHg(12.0/9.0kPa),无病理反射。根据上述血气分析结果,治疗应首选下列哪一项
A、Onewhoisinterestedingettinggoodgradesinexams.B、Onewhocanfinishtheassignmentontime.C、Onewhoismotivatedto
A、Becausetheycanputthewomanonmedicationtoaidrecovery.B、Becausetheycanhelpthewomanfindajobifsheisunemploye
Theoneaccidentsituationwhereimmediateactionmustbetakeniswhenapersonstopsbreathing.Thismightbetheresultofdr
A、Shewillcontinuewithherdiet.B、Shemightdietanyday.C、Shecan’taffordexpensivefood.D、Sheisoverweight.D男士说“Yoush
Politicalfiguresinparticularareheldtoverystrictstandardsofmoralfidelity.
随机试题
脊髓前角γ运动神经元传出冲动增加时,可使()。
患者,男,54岁。近2年来经常头痛、头晕、耳鸣、心悸、手脚麻木,记忆力减退。近1年来于清晨睡醒时常出现心前区阵发性压迫性绞痛并向左肩部放射。就诊时血压170/105mmHg,心电图表现为弓背向下型ST段抬高,诊断为变异型心绞痛。该患者应首选的药物是
电视台、电台和报纸记者的“街头拦人”调查,采取的是()
花钿委地无人收,翠翘金雀玉搔头。(《长恨歌》)委:
不支持窦性心律诊断的心电图表现是
非承包商原因导致非关键线路上的某项工作延误,如延误时间小于该项工作的总时差,则对此项延误的补偿是()。
关于有形贸易的正确说法是()。
以下各项中不属于房地产开发项目质量中的实物质量的是()。
在方法研究的分析工具中,不适用于服务性、行政性或管理性岗位的是()。
BSP设计的出发点是()。
最新回复
(
0
)