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
Ask why most people are right-handed, and the answer might fall along the same lines as why fish school(鱼成群地游). Two neuroscienti
Ask why most people are right-handed, and the answer might fall along the same lines as why fish school(鱼成群地游). Two neuroscienti
admin
2014-03-15
26
问题
Ask why most people are right-handed, and the answer might fall along the same lines as why fish school(鱼成群地游). Two neuroscientists suggest that social pressures drive individuals to coordinate their behaviors so that everyone in the group gets an evolutionary edge.
Approximately 85 percent of people prefer their right hand, which is controlled by the left hemisphere of the brain. One theorized benefit of locating a particular function in one hemisphere is that it frees the other to deal with different tasks. But that idea does not explain why. population-wide trends for handedness exist in the first place.
Moreover, evidence gleaned in recent years has overturned the long-held belief that human handedness is a unique by-product of brain specialization attributable to language. A suite of studies has revealed brain lateralization in species from fish to primates(灵长类). Last August, for instance, scientists discovered that in the wild, chimpanzees show hand preferences.
The presence of lateralization throughout the animal kingdom suggests some benefit from it, contend neuroscientists Giorgio Vallortigara of the University of Trieste and Lesley Rogers of the University of New England in Australia. Also, last August, in the journal Behavioral and Brain Sciences, the two presented evidence to support their idea that social constraints force individuals toward asymmetry in the same direction. They noted, for example, that baby chickens attack more readily when a threat appears on their left. And Rogers has found that chicks with more asymmetrical brains form more stable social groups: perhaps by approaching each other on the right, she hypothesizes, the chicks fight one another less and are more likely to notice predators.
Lateralization seems to confer an advantage for some fish as well. In certain species, the majority tend to swim left when a predator attacks, whereas other species head right. The potential benefits of such patterns may not seem intuitive: a predator could learn that attacking a fish on one particular side is more effective. But Vallortigara and Rogers’s idea fits with the conventional explanation of why fish school at all. When threatened, fish turning in the same direction have a greater chance of survival than if they scatter to become a darting swarm of head-butting fish.
Nevertheless, the bird and fish. data do not explain human handedness.
"The issue then becomes: maybe this lateralization long predates the rise of the mammals," speculates Robin Dunbar ,an evolutionary psychologist at the University of Liverpool in England.
Fish school suggests that ______.
选项
A、it was a necessary evolutionary process
B、it has something to do with human right-handedness
C、they need to coordinate with other fish
D、their brain function is unique
答案
B
解析
细节题。这篇短文第1段介绍左右手习惯并非人类所独有,动物也呈现类似特点,如鱼群的游动。这是因为环境压力迫使它们调整自己的行为,这也形成了它们的进化优势。鱼群的游动并非必要的进化过程,而是形成了进化优势。所以不能选择A,C的理由是明显的。D在原文中没有提到。所以选B。
转载请注明原文地址:https://kaotiyun.com/show/1yhi777K
0
在职申硕(同等学力)英语
相关试题推荐
What’syourearliestchildhoodmemory?Canyourememberlearningtowalk?Ortalk?Thefirsttimeyou【C1】______thunderorwatche
Aninternationaltreatysignedseveralyearsagobanstradeinplantsandanimalsofendangeredspecies.
Forthispart,youaretowriteacompositionof120-150wordsonthefollowingtopic:TheGreatestInventio
Accordingtothepassage,thevolunteers______.Accordingtothelastparagraph,thetypicalvolunteernowmaybe______.
Accordingtothewriter,theshiftfrom"education"to"learning"______.Inthesecondparagraph,thewritersuggeststhat_____
WhichofthefollowingisTRUE,accordingtothewriter?"Foralltheconsumerinterest"(Paragraph3)means______.
Onereasonformalariatobewidespreadnowisthat______WhatisthemostdifficultpartofLanzaro’sproject?
Youhavetofinishtheworkwithinthe______time.
Man:Willyoumakesureallthemembersofthestudentadvisorycommitteeknowwhattoexpectattomorrow’smeeting?Woman:They’
Doyoubelievethatseverepunishmentwoulddeterpotentialcriminalsfromevildoing?Isdeathpenalty(死刑)indispensablecompon
随机试题
下列关于风险管理的新旧理念对比中,说法不正确的是()。
在Word2010中,段落对话框的“缩进”表示文本相对于文本边界又向更内或页外缩进一段距离,段落缩进后文本相对打印纸边界的距离等于()。
2岁正常小儿的平均体重为
投标人应当在招标文件要求提交投标文件的截止时间前,将投标文件送达投标地点。招标人收到投标文件后,应当签收保存,不得开启。投标人少于2个的,招标人应当依照招标投标法重新招标。( )
()光纤除了在日本等国家干线网上有应用外,在我国干线网上几乎没有应用。
下列属于贸易管制所涉及的法律渊源的是()。
在俄亥俄模式中,工作管理和关心人得分高的领导比其他类型的领导更能促使员工有()。
20世纪80年代以来,各国银行间的竞争日益激烈,而西方各国关于银行资本定义不统一,资本充足率也没有规范标准。1988年7月,美国、英国、法国、加拿大等12国的中央银行达成巴塞尔协议。根据上述资料,回答下列问题:巴塞尔协议规定核心资本包括(
俱乐部、协会、专业团体和小型咨询公司通常采用的企业文化类型是()。
[2015年]若A,B为任意两个随机事件,则().
最新回复
(
0
)