首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
共用题干 Single-parent Kids Do BestSingle mums are better at raising their kids ...
共用题干 Single-parent Kids Do BestSingle mums are better at raising their kids ...
admin
2020-12-24
22
问题
共用题干
Single-parent Kids Do Best
Single mums are better at raising their kids than two parents-at least in the bird world.Mother zebra finches have to work harder and raise fewer chicks on their own,but they also produce more attractive sons who are more likely to get a mate.
The finding shows that family conflict is as important an evolutionary driving force as ecological factors such as hunting and food supply.______(46)
In evolutionary terms,the best strategy for any parent in the animal world is to find someone else to care for their offspring,so they can concentrate on breeding again.Soit's normal for parents to try to pass the buck to each other.But Ian Hartley from the University of Lancaster and his team wondered how families solve this conflict,and how the conflict itself affects the offspring.
______(47)They compared single females with pairs,by monitoring the amount of food each parent collected,and removing or adding chicks so that each pair of birds was raising four chicks,and each single mum had two-supposedly the same amount of work.
But single mums,they found,put in about 25 per cent more effort than females rearing with their mate. ______(48)"The offspring suffer some of the cost of this conflict,"says Hartley.
The cost does not show in any obvious decrease in size or weight,but in how attractive they are to the opposite sex.When the chicks were mature,the researchers tested the"fitness"of the male offspring by offering females their choice of partner.______( 49)
Sexual conflict has long been thought to affect the quality of care given to offspring,says zoologist Rebecca Kilner at Cambridge University,who works on conflict of parents in birds."But the experimental evidence is not great.The breakthrough here is showing it empirically."
More surprising,says Kilner,is Hartley',S statement that conflict may be a strong influence on the evolution of behaviour,clutch size and even appearance."People have not really made that link,"says Hartley.A female's reproductive strategy is usually thought to be affected by hunting and food supply.
______(50)
选项
______( 46)
A:To avoid being exploited,mothers with a partner hold back from working too hard if the father is being lazy,and it's the chicks that pay the price.
B:To find out,they measured how much effort zebra finch parents put into raising their babies.
C:Those males reared by single mums were chosen more often than those from two一parent families.
D:With two parents around,there's always a conflict of interests,which can have a detrimental effect on the quality of the offspring.
E:Kilner says conflict of parents should now be taken into account as well.
F:It turned out that single mums had greater influence on their offspring.
答案
D
解析
此空之前的内容介绍了家庭冲突也是进化的主要推动力之一。此空处应具体地描述家庭冲突对进化的影响,故选D。
前一段最后一句说Ian Hartley教授及其团队对家庭冲突对后代的影响产生兴趣,空后的内容又为他们对鸟类进行研究的具体方法和过程。故本题选B。
此空之前的内容介绍了单身母亲比有配偶的雌性会更加努力,所以此空处的内容应为介绍具有配偶的雌性的情况。故选A。
前一句的内容主要描述了当雄性雏鸟成熟时,研究人员对其进行配偶选择方面的实验。此空的内容应接着叙述实验的结果,故选C。
最后一段第一句说研究人员发现夫妻之间的矛盾冲突对于后代的行为、窝卵数,甚至是外表都会产生很大的影响。空前的一句又说人们通常认为雌性的生殖策略会受捕猎和食物供应的影响。此空处的内容应为建议将夫妻冲突的影响也考虑在内,故选E。
转载请注明原文地址:https://ti.zuoweng.com/ti/xt9QKKKQ
相关试题推荐
共用题干 HowWeFormFirstImpression1Weallhavefirstimpressionofsomeonew...
共用题干 HowWeFormFirstImpression1Weallhavefirstimpressionofsomeonew...
共用题干 TheOniyWayIsUpThinkofamodemcityandthefirstimagethatcomes...
共用题干 TheOniyWayIsUpThinkofamodemcityandthefirstimagethatcomes...
共用题干 WorkingMothersCarefullyconductedresearchesthathavefollowedthech...
共用题干 WorkingMothersCarefullyconductedresearchesthathavefollowedthech...
共用题干 WorkingMothersCarefullyconductedresearchesthathavefollowedthech...
共用题干 WorkingMothersCarefullyconductedresearchesthathavefollowedthech...
共用题干 WorkingMothersCarefullyconductedresearchesthathavefollowedthech...
共用题干 WorkingMothersCarefullyconductedresearchesthathavefollowedthech...
随机试题
根据以下材料,回答96-100题 某公司对办公楼项目进行招标,其中土方工程包括
为了解小微企业融资难的情况,课题组选择浙江省义乌市的小微企业作为调查对象,于20
流行性感冒大流行是由于流感病毒抗原性变异,其形成是由下列哪一项而引起的 A.血
《国务院办公厅关于全域旅游发展的指导意见》的主要目标是()A.旅游发展全域化B.旅游供给品质化C.旅游治理规范化D.旅游效益最大化E.旅游消费理性化
患者,男,63岁。发现右侧腹股沟可复性肿块3年。10小时前,用力排便时突感肿块明显增大,腹痛难忍,呕吐数次,伴发热、全身不适。查体:右腹股沟及阴囊可扪及肿...
教学过程是一种特殊的()。A.心理过程B.信息过程C.逻辑过程D.认识过程
除室内无车道且无人员停留的机械式汽车库外,汽车库、修车库内每个防火分区的人员安全出口不应少于()个。A.1B.2C.3D.4
对M蛋白的轻链型进行鉴定可以用A:血清蛋白区带电泳B:免疫电泳C:免疫固定电泳D:火箭免疫电泳E:免疫印迹技术
用有机溶剂加热提取,但溶剂消耗量大,操作麻烦的是A.浸渍法B.渗漉法C.煎煮法D.回流法E.连续回流法
药品的生产企业、经营企业、医疗机构在药品购销中暗中给予、收受回扣或者其他利益的,由( )A.卫生行政部门处罚B.工商行政管理部门处罚C.经济综合主管部门处