首页
登录
职称英语
[originaltext] Today, we are going to continue our discussion of social inse
[originaltext] Today, we are going to continue our discussion of social inse
游客
2024-04-09
5
管理
问题
Today, we are going to continue our discussion of social insects, focusing on the Argentinean, which as you might guess is a species of ant that are natives to Argentina. We’ll consider what happened to this type of ant after some members of the species move to California from their original habitat. Ok, well, in Argentina, these Argentine ants behave like most ant species around the world. They fight other ants of the same species if those ants are from some other nests. But the Argentine ants living in California behave differently. Ants from different nests form a single large colony. Within this colony, there is little aggression among ants from different nests. And when they fight insects from outside their colony, the Argentine ants can quickly recruit a huge army from their network of nests. This of course gives them advantages over other ants’species. So then, why do Argentine ants behave differently in California than they do in Argentina? Well, using genetic testing, researchers found that all the Argentine ants in California were very similar genetically. You see, when the first Argentine ants came to California, their population must have been very small, and all the later generations of Argentine ants there must bedescended from the same few ancestors. So they are all closely related. This discovery is important, because for most social insects, membership in a colony is based on how closely related they are genetically. Now listen to the following recording and answer questions 22 to 25.
22. What aspect of Argentine ant is mainly discussed?
23. What does the professor say about Argentine ants that live in Argentina?
24. What’s the characteristic of Argentine ants in California?
25. What did genetic testing indicate about the Argentine ants in California?
选项
A、They share the same few ancestors.
B、They can’ t be distinguished from native Californian ants.
C、They are evolving faster than native Californian ants.
D、Their future survival is in doubt.
答案
A
解析
细节题。根据Well,using genetic testing,researchers found that all the Argentine ants in California were very similar genetically.和all the later generations of Argentine ants there must be descended from the same few ancestors.可知,基因测试表明在加利福尼亚的阿根廷蚂蚁共有一样的少数祖先。因此,正确答案为A。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3546949.html
相关试题推荐
[originaltext]Hello,everyone!Intoday’slecture,let’stalkaboutthecin
[originaltext]Hello,everyone!Intoday’slecture,let’stalkaboutthecin
[originaltext]Theneedforbirthcontrolmethodshasdevelopedfairlyrecently,
[originaltext](I):Goodteacherscanalwaysfindawaytoencouragetheirstude
[originaltext](I):Goodteacherscanalwaysfindawaytoencouragetheirstude
[originaltext](I):Goodteacherscanalwaysfindawaytoencouragetheirstude
[originaltext](14)Allbigcitiesarequitesimilar.LivinginamodernAsia
[originaltext](14)Allbigcitiesarequitesimilar.LivinginamodernAsia
[originaltext]IntheUnitedStates,manypeopleoncelivedinlarge,twoand
[originaltext]W:Whatarethosebooksinyourhand?M:Nothingparticular.Just
随机试题
近年来,中国硕士研究生招收(recruitment)规模不断扩大,致使本科生报考硕士研究生的人数逐年增加。除了大学毕业生对学术的追求以及社会对高端人才(
[originaltext]Asweknow,itisveryimportantthatafirmshouldpayatten
下列不是确定贮水池有效容积因素的是( )。A.贮水池的调节水量 B.室内外消
对健康教育的作用和效果进行评价属于A.远期评价 B.近期评价 C.结局评价
类风湿性关节炎最常受累的部位是A.掌指关节及近端关节 B.远端关节 C.四肢
某建设单位2016年9月1日领取了施工许可证。由于特殊原因不能按期开工,故向发证
属于妊娠期药物毒性分级中的胆碱药D级的是A:乙酰胆碱、毛果芸香碱 B:毒扁豆碱
(2020年真题)根据《麻醉药品和精神药品管理条例》邮寄时需要预先办理准予邮寄证
属于DPP-4抑制剂的药物是()A.伏格列波糖 B.那格列奈 C.利拉鲁肽
A. B. C. D.
最新回复
(
0
)