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
After Dolly the Sheep come the Mickey Mice. (46)Scientists are expected to reveal that they have succeeded in creating the first
After Dolly the Sheep come the Mickey Mice. (46)Scientists are expected to reveal that they have succeeded in creating the first
admin
2009-04-27
41
问题
After Dolly the Sheep come the Mickey Mice. (46)
Scientists are expected to reveal that they have succeeded in creating the first animal cloned from the cells of an adult since the birth of Dolly two years ago.
A formal announcement is expected within weeks.
(47)
Researchers in Hawaii are understood to have manufactured a mouse that is an identical genetic copy of another living animal, raising the prospect of commercial cloning of animals—and eventually of humans.
Since scientists at the Roslin Institute in Edinburgh revealed the existence of Dolly to awed colleagues in February last year, nobody has been able to make another clone derived from cells taken from an adult animal. Dolly was grown from the udder cells of an ewe.
Some biologists have since queried Dolly’s authenticity because of their inability to reproduce the results, The cloned mouse would end any doubts and confirm that man is genuinely on verge of a new era in reproductive biology.
The first hint of the breakthrough by Dr. Ryuzo Yanagimachi, the professor who led the University of Hawaii group, emerged after a re cent lecture when he showed a slide of Dolly and told his audience, "I can say she is not alone."
(48)
The scientist, who won the International Prize for Biology in 1996 for his work on reproduction, declined last week to give details of the cloning research until its expected publication in the scientific journal Nature later this month.
It is understood that Yanagimachi, who has worked with international collaborators, was able to clone the mouse using a technique slightly different to that employed by scientists at the Roslin Institute.
But, like the Roslin team led by Dr. Eau Wilrnut, it is thought he has been able to extract the genetic material from the cell of an adult and transplant it into an egg. In Dolly’s case, the egg was then implanted into the womb of a surrogate mother that gave birth to a healthy lamb.
This technique, previously thought by some tb be impossible, followed successful experiments in creating animals from cells taken from fetuses. These were much simpler to conduct because foetal cells have not yet taken on specialist roles in the organism and can be easily manipulated.
Yanagimachi’s team is one of several around the world that have been trying to produce another Dolly-like clone, said April Darcy, of PPL Therapeutics, the company that holds the commercial rights to the Roslin cloning techniques;
(49)
Scientists hope that cloning, once perfected, will enable revolutions in transplant surgery, allowing skin and organs to be grown to order without fear of patient rejection.
It will also be a powerful research tool in finding cures for genetic diseases.
(50)
But fears that cloning techniques could eventually be used in the creation of carbon-copy humans have already prompted western governments including Britain to ban such research.
选项
答案
科学家们希望,克隆技术一旦完善,就能使移植外科学发生变革,使皮肤和器官按事先已确定好的样子生长,而不必担心患者出现排异现象。
解析
为符合汉语表达习惯,动宾短语"enable revolution in transplant surgery"译作使动句型"使移植外科学发生变革";被动语态"be grown"转译作主动语态"生化","to order"被增译为"按事先确定好的样子";而介词短语"without fear of patient rejection"则转译为动词短语"而不必担心患者出现排异现象"。
转载请注明原文地址:https://kaotiyun.com/show/Ffa4777K
0
考研英语一
相关试题推荐
[A]Messup[B]Befrugal[C]Stayindependent[D]Cutyourbudgetforhouseholditems[E]Askquestions[F]Find
Thenewpaperwasspurredbythediscoveryofseveral120,000-year-oldtoolsatadesertarchaeologicalsiteintheUnitedArab
Thenewpaperwasspurredbythediscoveryofseveral120,000-year-oldtoolsatadesertarchaeologicalsiteintheUnitedArab
Foralmosttwocenturiesnow,scientistshavenoticedaplace’ssuicideratebearstroublinglinkstothechangingoftheseason
ReadthefollowingtextandanswerthequestionsbychoosingthemostsuitablesubtitlefromthelistA-Gforeachnumberedpara
It’softensaidthatthemarkofacivilisedsocietyishowittreatsitsmostvulnerablecitizensintimesofausterity.Andin
"Googleisnotaconventionalcompany.Wedonot【C1】______tobecomeone,"wroteLarryPageandSergeyBrin,thesearchfirm’sfo
AIsystemsmustbetrainedhowbesttointeractwithhumans.Whileorganizationsacrosssectorsarenowintheearlystagesoff
Instantfoods,instantcommunication,fastertransportation—alloftheserecentdevelopmentsaredesignedtosavetime.Ironical
随机试题
以拍卖方式订立合同,下列属于要约的是()
求由方程xy-ex+ey=0所确定的隐函数的导数dy/dx.
A.普通菌毛B.荚膜C.芽胞D.鞭毛E.质粒与细菌抗吞噬作用有关的结构是
A.麻醉药品B.医疗用毒性药品C.第二类精神药品D.放射性药品E.贵重药品盐酸吗啡注射液属于
乙酰辅酶A是下列哪种酶的变构激活剂
(2017·陕西)由于新旧知识的关系不同,形成了不同的学习形式,即下位学习、上位学习和并列结合学习。下列选项中属于下位学习的是()
现阶段,我国个人消费品分配方式的多样化是由所有制实现形式的多样化决定的。()
按照监督主体的不同,公安执法监督可以分为( )。
给定资料1.“请为6号小朋友的表演投票”“麻烦给我家孩子投票,每人每天可以投两票”……时下,针对学生(幼儿)的网络投票活动种类繁多,已经成为微信朋友圈的一道“风景”。市民H经常会收到朋友圈发来的网络投票链接。这些投票对象中,有些是朋友的孩子,有些是朋友
JohnDrydenwasanEnglish______.
最新回复
(
0
)