首页
登录
职称英语
Until recently, scientists did not know of a close vertebrate analogue to th
Until recently, scientists did not know of a close vertebrate analogue to th
游客
2024-01-13
54
管理
问题
Until recently, scientists did not know of a close vertebrate analogue to the extreme form of altruism observed in eusocial insects like ants and bees, whereby individuals cooperate, sometimes even sacrificing their own opportunities to survive and reproduce, for the good of others. However, such a vertebrate society may exist among un- der ground colonies of the highly social rodent Heterocephalus glaber, the naked mole rat.
A naked mole rat colony, like a beehive, wasp s nest, or termite mound, is ruled by its queen, or reproducing female. Other adult female mole rats neither ovulate nor breed. The queen is the largest member of the colony, and she maintains her breeding status through a mixture of behavioral and, presumably, chemical control. Queens have been long-lived in captivity, and when they die or are removed from a colony one sees violent fighting for breeding status among the larger remaining females, leading to a takeover by a new queen.
Eusocial insect societies have rigid caste systems, each insects’ s role being defined by its behavior, body shape, and physiology. In naked mole rat societies, on the other hand, differences in behavior are related primarily to reproductive status(reproduction being limit- ed to the queen and a few males), body size, and perhaps age. Smaller non-breeding members, both male and female, seem to participate primarily in gathering food, transporting nest mate- rial, and tunneling. Larger nonreaders are active in defending the colony and perhaps in removing dirt from the tunnels. Jarvis’ work has suggested that differences in growth rates may influ- ence the length of time that an individual performs a task, regardless of its age. Cooperative breeding has evolved many times in vertebrates, but unlike naked mole rats, most cooperatively breeding vertebrates(except the wild dog, Lycaon pictus)are dominated by a pair of breeders rather than by a single breeding female. The division of labor within social groups is leas pronounced among other vertebrates than among naked mole rats, colony size is much smaller, and mating by subordinate females may not be totally suppressed, whereas in naked mole rat colonies sub- ordinate females are not sexually active, and many never breed. [br] According to the passage, which of the following is a supposition rather than a fact concerning the queen in a naked mole rat colony?
选项
A、She is the largest member of the colony.
B、She exerts chemical control over the colony.
C、She mates with more than one male.
D、She attains her status through aggression.
E、She is the only breeding female.
答案
B
解析
从文中推出,哪一点关于裸鼹鼠种群王后的说法是猜想,不是事实?A.种群中最大。原文L18。B.正确。对种群施加化学物质控制。原文L21“presumably”。C.和一个以上雄性交配。原文L34—35。D.通过攻击得到其地位。L24—27。E.是惟一交配的雌性。文中多次提到。
转载请注明原文地址:https://tihaiku.com/zcyy/3359097.html
相关试题推荐
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Themoretimescientistsspenddesigningcomputers,themoretheywonderath
Themoretimescientistsspenddesigningcomputers,themoretheywonderath
Scientistssaidtheyhavefoundevidenceofagiantplanetfaroutinourso
Scientistssaidtheyhavefoundevidenceofagiantplanetfaroutinourso
Scientistssaidtheyhavefoundevidenceofagiantplanetfaroutinourso
随机试题
OfalltheAmericanPresidents,whosepresidentialtermisthelongest?A、George
[originaltext]W:IhavetocallKate,andtellherabouttheinterviewtomorrow
嗜多色性红细胞增多表明骨髓造血功能A.正常B.旺盛C.恶性变D.低下E.重度低下
患者,女性,28岁。午后低热3周(38℃左右),咳少量痰液,乏力和纳差,血沉加快
甲公司开发建设一住宅小区,计划投资2000万人民币。建设期间由于资金困难拟将在建
治疗痰饮之脾阳虚弱证,治当宜选A.小半夏加茯苓汤 B.苓桂术甘汤 C.苓甘五
釉质是人体最硬的组织,其洛氏硬度值是A.300 B.320 C.340 D
唾液腺造影的适应证不包括A.唾液腺肿瘤 B.慢性唾液腺炎 C.唾液腺瘘D.唾
(2014年真题)甲公司每年最低运营资本是1000万元,但是有5%的可能性需要1
(2021年真题)甲公司是一家制造业企业,为增值税一般纳税人。确认销售收入同时结
最新回复
(
0
)