首页
登录
职称英语
American researchers found females are the more talkative sex because of a s
American researchers found females are the more talkative sex because of a s
游客
2023-07-03
34
管理
问题
American researchers found females are the more talkative sex because of a special "language protein" in the brain. The study, compiled by neuroscientists and psychologist from the University of Maryland, concluded that women talked more because they had more of the Foxp2 protein. Their findings come after it was previously claimed that ladies speak about 20 000 words a day—more than 13 000 more than men.
"This study is one of the first to report a sex difference in the expression of a language-associated protein in humans or animals," said Prof. Margaret McCarthy, who led the study. "The findings raise the possibility that sex differences in brain and behavior are more pervasive(普遍的)and established earlier than previously appreciated."
The research, published in the Journal of Neuroscience, found that higher levels were found among humans that were women but in rats they were males.
In the experiment, the researchers attempted to determine what might make male rats more vocal(有声的)than their female friends. They separated four-day-old rats from their mothers and then counted the number of times they cried out over five minutes. While both sexes emitted hundreds of cries, the males called out twice as often, they found. According to tests compiled on the parts of the brain known to be involved in vocal calls,the male pups(幼崽)have up to twice as much Foxp2 protein as the females. The researchers then increased the production in the brains of female pups and reduced it in males. This led to the female rats crying out more often. In contrast, males became less "talkative".
The researchers then tested samples from ten children, aged between three and five, which showed that females had up to a 30 percent more of the Foxp2 protein than males, in a brain area key to language in humans.
"Based on our observations, the assumption of higher levels of Foxp2 in girls and higher levels of Foxp2 in male rats is an indication that Foxp2 protein levels are associated with the more communicative sex," said Prof. McCarthy. "Our results implicate Foxp2 as a component of the neurobiological basis of sex differences in vocal communication in mammals." [br] Rats are used in the experiment in order to indicate that______.
选项
A、sex differences determine different one’s vocal abilities
B、communicative differences exist in male and female rats
C、Foxp2 protein functions differently in humans and animals
D、Foxp2 protein affects animals’ vocal communication as well
答案
D
解析
细节辨认题。由定位句可知,研究人员做这次实验的目的是试图确定雄性老鼠比雌性同伴更能发声的因素。而根据下文可知,实验最终的结果是Foxp2蛋白也影响动物的发声,故正确答案为D)。
转载请注明原文地址:https://tihaiku.com/zcyy/2805911.html
相关试题推荐
AsaprofessoratalargeAmericanuniversity,Ioftenhearstudentssaying:
AsaprofessoratalargeAmericanuniversity,Ioftenhearstudentssaying:
AsaprofessoratalargeAmericanuniversity,Ioftenhearstudentssaying:
AsaprofessoratalargeAmericanuniversity,Ioftenhearstudentssaying:
AsaprofessoratalargeAmericanuniversity,Ioftenhearstudentssaying:
AsaprofessoratalargeAmericanuniversity,Ioftenhearstudentssaying:
WhatYouReallyNeedtoKnowA)Aparadox(悖论)ofAmerican
WhatYouReallyNeedtoKnowA)Aparadox(悖论)ofAmerican
WhatYouReallyNeedtoKnowA)Aparadox(悖论)ofAmerican
WhatYouReallyNeedtoKnowA)Aparadox(悖论)ofAmerican
随机试题
Microfinanceisananti-povertytool.Ifyoumakesmallloanstogroupsofpo
[img]2022m3x/ct_ve01202001m_eillist_1404_220329[/img][br][originaltext]Today
Agricultureisundoubtedlythemostimportantsectorintheeconomiesofm
硅酸盐水泥的初凝时间不得早于( )min。A.35 B.40 C.45
根据下面资料,回答 BythetimeIfinishedhighs
理财规划师在为客户进行保险规划时,应该让客户知道保险在家庭理财中的功能,下列()
消防给水管网施工完成后,要进行试压和冲洗。系统试压前选用试压用的压力表不少于2只
证券交易所负责对证券公司的投资银行业务的监管。()
赵家庄乡下辖3个行政村,分别是A村、B村、C村。2019年年末,该乡“村集体经济
工程地质对建设工程选址的影响主要在于( )。A.地质岩性对工程造价的影响 B.
最新回复
(
0
)