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
With only about 1,000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species.
With only about 1,000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species.
admin
2015-04-10
31
问题
With only about 1,000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species. That’s a move similar to what a Texas A&M University researcher has been undertaking for the past five years in a project called "Noah’s Ark".
Dr. Duane Kraemer, a professor in Texas A&M’s College of Veterinary Medicine and a pioneer in embryo transfer work and related procedures, said he salutes the Chinese effort and "I wish them all the best success possible. It’s a worthwhile project, certainly not an easy one, and it’s very much like what we’re attempting here at Texas A&M—to save animals from extinction. "
Noah’s Ark is aimed at collecting eggs, embryos, semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Kraemer says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2,000 species of mammals, birds and reptiles will become extinct over the next 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure could take from three to five years to complete.
"The nuclear transfer of one species to another is not easy, and the lack of available panda eggs could be a major problem," Kraemer believes. "They will probably have to do several hundred transfers to result in one pregnancy. It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort," adds Kraemer, who is one of the leaders of the Missyplicity Project at Texas A&M, the first-ever attempt at cloning a dog.
"They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly applaud their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed. "
The main purpose of "Noah’s Ark" project is to
选项
A、salute the Chinese efforts in saving pandas.
B、implant embryo into a host animal.
C、clone cells from a dead female panda.
D、save endangered animals from extinction.
答案
D
解析
“诺亚方舟”项目的主要目的是[A]赞扬中国在拯救大熊猫上的努力。[B]将胚胎植入母体动物中。[C]克隆来自一只死亡雌性大熊猫身上的细胞。[D]拯救濒临灭绝的物种。文章第三段指出,“诺亚方舟”项目的目的是收集濒危动物的卵子、胚胎、精子和DNA,用液氮把它们储存起来。万一有些物种灭绝了,将会有足够的基础建设材料(指储存的动物的卵子、胚胎、精子和DNA)再造这些物种。文章的最后一段第二句再次提到了这个项目的目的,即拯救濒临灭绝的物种。因此,本题的正确答案应是[D]。[A]、[B]和[C]所叙述的内容均不是该项目的目的,因此都是错误答案。
转载请注明原文地址:https://kaotiyun.com/show/tH74777K
0
考研英语一
相关试题推荐
Doctorshaverecentlydiscoveredthat______.Whatisthemostcommoncauseofinfantdeaths?
"Hightech"and"stateoftheart"aretwoexpressionsthatdescribeverymoderntechnology.Hightechisjustashorterwayof
WhichofthefollowingstatementsisTRUEaboutTolerance.org?Accordingtothepassage,childrenareencouragedtojoininma
ItisgenerallybelievedthatthedigitaldivideissomethingTheauthor’sattitudetowardtheopinionheldbyCardandDiNardo
Peoplehavegoodreasontocareaboutthewelfareofanimals.EversincetheEnlightenment,theirtreatmenthasbeenseenasam
Inalmostallcasesthesoftpartsoffossilsaregoneforeverbuttheywerefittedaroundorwithinthehardparts.Manyofth
Britainhasoneofthebiggestonlineeconomies.Itsresearchersinventedboththewebandthecomputer.IthastheEnglishlang
Ifyou’relookingforacreativesolutiontosomeproblematwork,don’tretreatintoachamberofsolitudetoponderyourdilem
Languagemeansthatwehaveself-consciousness,whichmakesusauniquespeciesabletocontrolourselvesandourenvironmentsi
Whateverthecauses,Englishbytheendoftheyear2050willhavebeenmorewidelyspokenandwrittenthananyotherlanguage__
随机试题
给婴儿添加辅食的原则有哪些?
A.黑色素瘤B.脂肪瘤C.纤维瘤D.血管瘤E.皮脂腺囊肿好发于皮下、界限清楚、分叶状、生长较慢的肿瘤是
临床医生申请血浆时,输血前相容性检测项目不包括
(2007)压气机最理想的压缩过程是采用()。
设置会计科目时,不仅要能全面正确地反映企业的财务状况和经营成果,满足外部投资者和债权人的需要,还应当有利于企业内部管理活动的开展,这是设置会计科目的()原则
TothewestofAmericaliesthe______Ocean;totheeastofAmericaliesthe______Ocean.
我区医疗救助对象患重大疾病医疗救助年封顶线是()万元。
某日深夜,甲喝醉酒后,叫上乙外出找乐,乙应邀开车载甲前往一娱乐场所。当车行至一昏暗的路上时,甲看见路边有一女子丙(21岁)正在等车,遂对乙说:“停车下去看看,找那个女的玩玩。”乙便下车,跟丙搭讪,发现丙神情恍惚,有点发呆,顿觉无趣,便上车对甲说:“那个女的
InDecember,WaymoLLC,theleadingdriverlesscarcompany,broughtouttheworld’sfirstcommercialrobo-taxiservice.Butfor
Whydomostparentsfeelembarrassedwhentheirchildrengraduatefromhighschool?
最新回复
(
0
)