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
外语
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
2012-07-17
25
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 (胚胎) 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 (精子) 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 (爬行动物) 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. "
What could be the major problem in cloning pandas according to Professor Kraemer?
选项
A、Lack of host animals.
B、Lack of available panda eggs.
C、Lack of funds.
D、Lack of qualified researchers.
答案
B
解析
本题是一道具体细节题。问按照克雷默教授的意见,在克隆大熊猫过程中的主要问题是什么。利用查阅式阅读法,根据第七段第一句,将一个物种的细胞移植到另外一个物种体内是件不容易的事,缺乏大熊猫的卵子可能是一个主要问题。因此,本题的正确答案应是B。
转载请注明原文地址:https://kaotiyun.com/show/iIXO777K
0
在职攻硕英语联考
相关试题推荐
Sociologistsusethetermpowertorefertothecapacityofpeopleorgroupstocontrolorinfluencetheactionsofothers,whet
Peoplesufferingfrom______prefertostayshutintheirhomesandbecomepanic-strickeninlargepublicbuildingsandopenfield
Theamazingsuccessofhumansasa【C1】______istheresultoftheevolutionarydevelopmentofourbrainswhichhasled,amongoth
Shouldwecareifover150knownspeciesofanimalshave【C1】______fromtheearthinthelastfiftyyears?Shouldwebeconcerned
Aperson’shomeisasmuchareflectionofhispersonalityastheclotheshewears,thefoodheeatsandthefriendswithwhomh
Becausetheworkerswerenewandinexperienced,themanagerhadtowatchthemand______theirworkclosely.
Allcountrieshaveobviousincentivestolearnfrompastmistakes,butthosethathavesuccessfullyrisentothestatusofgreat
Therearefewhabitsasinfuriatingassomeonemakinguswait.But,despitewhatmayberunningthroughyourmindasyou’rekept
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
随机试题
模具冷却水道设置在模具零件内部,形状应为
右肺根()
医师将一位符合安乐死条件的患者,使用药物结束其痛苦的生命,称为
我国现存最早的本草学专著是我国第一部炮制专著是
对自动喷水灭火系统的报警阀进行渗潜心式试验时,试验压力为额定工作压力的( ),阀瓣处应无渗漏。
根据《建设工程工程量清单计价规范》GB50500—2013,关于投标总价的说法,正确的是()。
债权人行使撤销权的必要费用的承担者是()。
四川风味小吃是()。
GooglealreadyhasawindowintooursoulsthroughourInternetsearchesanditnowhasinsightintoourailingbodiestoo.The
10/ten
最新回复
(
0
)