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
IQ-gene In the angry debate over how much of IQ comes from the genes that children inherit from parents and how much comes f
IQ-gene In the angry debate over how much of IQ comes from the genes that children inherit from parents and how much comes f
admin
2015-08-08
52
问题
IQ-gene
In the angry debate over how much of IQ comes from the genes that children inherit from parents and how much comes from experiences, one little fact gets overlooked: no one has identified any genes(other than those that cause retardation)that affect intelligence. So researchers led by Robert Plomin of London’s Institute of Psychiatry decided to look for some. They figured that if you want to find a " smart gene," you should look in smart kids. They therefore examined the DNA of students like those who are so bright that they take college entrance exams four years early—and still score at Princeton-caliber levels. The scientists found what they sought. " We have," says Plomin, "the first specific gene ever associated with general intelligence. "
Plomin’s colleagues drew blood from two groups of 51 children each, all 6 to 15 years old and living in six counties around Cleveland. In one group, the average IQ is 103. All the children are white. Isolating the blood cells, the researchers then examined each child’s chromosome 6. Of the 37 landmarks on chromosome 6 that the researchers looked for, one jumped out: a form of gene called IGF2R occurred in twice as many children in the high-IQ group as in the average group— 32 percent versus 16 percent. The study, in the May issue of the journal Psychological Science, concludes that it is this form of the IGF2R gene that contributes to intelligence.
Some geneticists see major problems with the IQ-gene study. One is the possibility that Plomin’s group fell for " chopsticks fallacy". Geneticists might think they’ve found a gene for chopsticks flexibility, but all they’ve really found is a gene more common in Asians than, say, Africans. Similarly, Plomin’s IQ gene might simply be one that is more common in groups that emphasize academic achievement. "What is the gene that they’ve found reflects ethnicity? "asks geneticist Andrew Feinberg of Johns Hopkins University. " That alone might explain the link to intelligence , since IQ tests are known for being culturally sensitive and affected by a child’s environment. " And Neil Risch of Standford University points out that if you look for 37 genes on a chromosome , as the researchers did, and find that one is more common in smarter kids, that might reflect pure chance rather than a causal link between the gene and intelligence. Warns Feinberg: "I would take these findings with a whole box of salt. "
A gene for chopsticks flexibility is found to be______.
选项
A、unrelated to the ability to use chopsticks
B、related to the ability to use chopsticks
C、unrelated to the ability to use forks
D、related to the ability to use forks
答案
A
解析
第三段第一开头就告诉我们关于使用筷子能力的发现是一个误区(fallacy),接下来说Geneticists might think they’ve found a gene for chopsticks flexibility,but all they’ve reallyfound is a gene more common in Asians than,say,Africans.所以选A,而C项和D项文中均未提及。
转载请注明原文地址:https://kaotiyun.com/show/sRmd777K
本试题收录于:
职称英语卫生类B级题库职称英语分类
0
职称英语卫生类B级
职称英语
相关试题推荐
Youwillhearfivepeoplegivingtheiropinionsonspankingchildren.Forquestions9-13,choosefromthelistA-Fwhateac
Youwillhearfivepeoplegivingtheiropinionsonspankingchildren.Forquestions9-13,choosefromthelistA-Fwhateac
Youwillhearfivepeoplegivingtheiropinionsonspankingchildren.Forquestions9-13,choosefromthelistA-Fwhateac
Youwillhearfivepeoplegivingtheiropinionsonspankingchildren.Forquestions9-13,choosefromthelistA-Fwhateac
Youwillhearfivepeoplegivingtheiropinionsonspankingchildren.Forquestions9-13,choosefromthelistA-Fwhateac
Lookatthetenstatementsforthispart.Youwillhearapassageabout"AResearchonSleep".Youwilllistentoittwice.
Lookatthetenstatementsforthispart.Youwillhearapassageabout"AResearchonSleep".Youwilllistentoittwice.
Lookatthetenstatementsforthispart.Youwillhearapassageabout"AResearchonSleep".Youwilllistentoittwice.
Lookatthetenstatementsforthispart.Youwillhearapassageabout"AResearchonSleep".Youwilllistentoittwice.
随机试题
甲氨蝶呤主要用于
若该桥的弹性模量为E=3.35×10N/mm4,梁跨中横截面面积A=3.4m2,惯性矩I=1.5m4,试判定公路-Ⅱ级荷载的冲击系数μ与( )项数值最为接近。当桥上作用的活载是挂车-100级,1号梁四分之一跨径处截面的弯矩最接近的数值是( )。
可变对价确定最佳估计数时,下列表述不正确的是()。
教育要遵循个体身心发展的规律。《学记》中的“当其可之谓时,时过然后学则勤苦而难成”。这句话反映了人的身心发展过程中存在()的现象。
心理学是研究___________发生、发展规律的科学。
劳动者在()情形下,依法享有社会保险待遇。①失业②生育③因工伤残④患职业病
会议记录的组成是()。
在大棚蔬菜等植物栽种过程中,可采用白天适当提高温度、夜间适当降低温度的方法,来提高作物的产量,这是因为温度可以影响光合作用的过程。下列选项中,不能影响光合作用的是:()
下列关于法的权利和义务性,表述不正确的有()。
在深度为5的满二叉树叶中,叶子结点的个数为()。
最新回复
(
0
)