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
考研
As any human being knows, many factors govern whether people are happy or unhappy. External circumstances are important: employe
As any human being knows, many factors govern whether people are happy or unhappy. External circumstances are important: employe
admin
2021-09-17
60
问题
As any human being knows, many factors govern whether people are happy or unhappy. External circumstances are important: employed people are happier than unemployed ones and better-off people than poor ones.
Age has a role, too.
But personality is the single biggest determinant: extroverts are happier than introverts, and confident people happier than anxious ones.
That personality, along with intelligence, is at least partly heritable is becoming increasingly clear; so, presumably, the tendency to be happy or miserable is, to some extent, passed on through DNA. To try to establish just what that extent is, a group of scientists examined over 1,000 pairs of twins from a huge study on the health of American adolescents. They conclude that about a third of the variation in people’s happiness is heritable.
But while twin studies are useful for establishing the extent to which a characteristic is heritable, they do not finger the particular genes at work. One of the researchers, Jan-Emmanuel De Neve, of University College, London, and the London School of Economics, has tried to do just that, by picking a popular suspect—the gene that encodes the serotonin-transporter protein, and examining how variants of that gene affect levels of happiness.
Serotonin is involved in mood regulation. Serotonin transporters are crucial to this job. The serotonin-transporter gene comes in two functional variants—long and short. People have two versions (known as alleles). The adolescents in Dr. De Neve’s study were asked to grade themselves from very satisfied to very dissatisfied. Dr. De Neve found that those with one long allele were 8% more likely than those with none to describe themselves as very satisfied; those with two long alleles were 17% more likely.
Which is interesting. Where the story could become controversial is when the ethnic origins of the volunteers are taken into account. All were Americans, but they were asked to classify themselves by race as well. On average, the Asian Americans in the sample had 0.69 long genes, the black Americans had 1.47 and the white Americans had 1.12.
There is growing interest in the study of happiness, not just among geneticists but also among economists and policymakers dissatisfied with current ways of measuring humanity’s achievements. Future work in this field will be read avidly in those circles.
Which of the following is the twin studies’ finding?
选项
A、The tendency to be happy or miserable is passed on through DNA.
B、The happiness of about 330 pairs of twins is heritable.
C、They establish the extent to which a personality is decisive.
D、They hardly find the serotonin-transporter gene probably functioned.
答案
D
解析
细节题。根据题干关键词定位到第二、三段。根据第三段开头的But可知,从句和主句之间是转折关系,主句意为“研究并未指出到底是哪个基因起到了遗传作用”,故D项“研究没有发现血清素运转体蛋白质基因可能起作用”为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/wv1Z777K
0
考研英语一
相关试题推荐
InquiringaboutAdmissionWriteane-mailofabout100wordsbasedonthefollowingsituation:YouappliedtoCentralWa
现代政府依赖专家人才——2000年英译汉及详解Governmentsthroughouttheworldactontheassumptionthatthewelfareoftheirpeopledependslargely
正规教育的地位——2009年英译汉及详解Thereisamarkeddifferencebetweentheeducationwhicheveryonegetsfromlivingwithothersandthede
TheinclusionofallchildrenandyouthispartofageneralintegrativetrendthathasacceleratedsinceWorldWarII.Itrelat
Television,themostpervasiveandpersuasivemoderntechnologies,markedbyrapidchangeandgrowth,ismovingintoanewera,
Inaddition,changesmadetotheconstructioncodesinLosAngelesduringthelast20yearshavestrengthenedthecity’sbuildi
AncientGreekphilosopherAristotleviewedlaughteras"abodilyexerciseprecioustohealth."But【C1】______someclaimstothec
AncientGreekphilosopherAristotleviewedlaughteras"abodilyexerciseprecioustohealth."But【C1】______someclaimstothec
Trustisatrickybusiness.Ontheonehand,it’sanecessarycondition【C1】______manyworthwhilethings:childcare,friendship
Duringthetraditionalweddingceremony,the【C1】______couplepromiseeachotherlifelongdevotion.Yet,aboutoneoutoffourAm
随机试题
对于修改权,以下表述正确的是()
在Windows资源管理器中,假设已经选定文件,下列能实现复制操作的有________。
以鼠类为主要传染源的传染性疾病是
下列()设施具有指引或诱导交通作用。
专用会计核算软件的使用一般不需进行()。
随着征税对象数额或相对比例的增大而逐级提高的税率基本形式是()。
邓小平理论作为马克思主义同当代中国实践和时代特征相结合的产物,是毛泽东思想在新的历史条件下的继承和发展。()
假如你的同事能力不如你,而他却得到领导的信任,你怎么办?
材料1认为的观念是从哪里来的?如何理解“有些观念同时有两个来源”?材料1和材料2所反映观点有什么区别?如何理解“人的思维最本质和最切近的基础,正是人所引起的自然界的变化,而不是单独的自然界本身”?说明材料3在认识论上的基本观点。
B这道题中涉及几个数字,因此听懂问题很关键。问题是“哪一件衣服会适合那位男上?”他说6号小10号大,要试试8号的,可见我们应该选8号。
最新回复
(
0
)