首页
登录
职称英语
It is a wise father that knows his own child, but today a man can boost his
It is a wise father that knows his own child, but today a man can boost his
游客
2024-02-08
38
管理
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 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 webbing saliva(唾液)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(世系), either the Y chromosome(染色体)inherited through men in a father’s line or mitochondrial(线粒体)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. [br] What is skeptical observers’ opinion on ancestry testing?
选项
A、It fails to trace distant ancestors.
B、It rebuilds reliable bloodlines.
C、It contains fully genetic information.
D、It fails to achieve the claimed accuracy.
答案
D
解析
根据题干中的skeptical observers将本题出处定位于第5段首句。第5段首句提到,但是有些观察家们持怀疑态度。第2句提到,纽约州立大学的社会学家Troy Duster说,“那些声称他们可以进行血液检测的人兜售的是虚假的准确}生”,这说明,持怀疑态度的观察者们认为基因检测的结果不准确。故答案为D)。第5段末句说的是这些人所提供的血液检测只能追踪一两个祖先,不能追踪其他的祖先,说的是祖先的数量问题,故排除强干扰项A)。B)“复原可靠的血统”属于理解原文错误的情况下设计的选项。C)是根据第5段第4句
转载请注明原文地址:https://tihaiku.com/zcyy/3433106.html
相关试题推荐
TheFatheringGap:PitfallsofModernFatherhoodFather’sDa
TheFatheringGap:PitfallsofModernFatherhoodFather’sDa
TheFatheringGap:PitfallsofModernFatherhoodFather’sDa
TheFatheringGap:PitfallsofModernFatherhoodFather’sDa
TheFatheringGap:PitfallsofModernFatherhoodFather’sDa
Afather’srelationshiptohischild’scurrentandfutureacademicsuccessa
Afather’srelationshiptohischild’scurrentandfutureacademicsuccessa
Afather’srelationshiptohischild’scurrentandfutureacademicsuccessa
[originaltext]W:Son,Idon’tknowwhattogetforyourfather.Hehasaboutev
[originaltext]W:Son,Idon’tknowwhattogetforyourfather.Hehasaboutev
随机试题
Doyouagreeordisagreewiththefollowingstatement?Teachersshouldbepa
ManyparentswhowelcometheideaoftinningofftheTVandspendingmoreti
TheMondayeditionoftheUSATodaysaidsixtypeoplehavediedin84crashes
[originaltext]M:Whyisitsoimportanttogotocollege?W:(13)Educationiscr
以下关于不同人群使用同一种药物的叙述,错误的是A.不同个体,药物用量相同,但作用
某钢筋混凝土框架结构多层办公楼局部平面布置如图所示(均为办公室),梁、板、柱混凝
收益与风险的本质关系可以表述为如下公式:预期收益率=无风险利率一风险补偿。()
马勃的主治病证是A.肝火扰肺之咳痰带血 B.血热吐衄、咳嗽失音 C.热结痰盛
成品储存的作业内容除仓储作业和物品养护外,还应包括( )。A.包装加固 B.
关于产业结构优化的说法,正确的是( )。A.国民经济中各个产业都能按照同一速度
最新回复
(
0
)