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
2010-05-09
57
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, says 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 mammmals, 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. 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 Dr. Kraemer?
选项
A、Lack of available panda eggs.
B、Lack of host animals.
C、Lack of qualified researchers.
D、Lack of funds.
答案
A
解析
细节题 根据参见第六段第二句...and the lack of available panda eggs could be a major problem...
转载请注明原文地址:https://kaotiyun.com/show/B4OK777K
0
大学英语六级
相关试题推荐
BluetoothWhenyouusecomputers,entertainmentsystemsortelephones,thevariouspieces-andpartsofthesystemsmakeupa
Thereportsaysthatbythemiddleofthecenturyintheworstcase,nofewerthansevenbillionpeoplein60countries__________
BothVegaandherfanscalledthemselvesavatarsbecausetheyimagedthattheythemselvesplayedattheconcertorattendedit.
What’speople’sresponsetoaneutralstimulus?Theword"amygdala"(Para.4)probablyreferstotheareainthebrainthat____
A、Becauseofthetechnologyprogress.B、Becauseofthecomputerrevolution.C、Becauseoftheinventionofcomputer.D、Becauseof
MarkTwainwasbornduringtheperiodoftheIndustrialRevolution.WhenMarkTwainbecameaminerinthefrontierregion,hes
A、Addupthefiguresoncemorenow.B、Putoffthecalculationsuntiltomorrow.C、Takearestfirstandfinishthefigurestoday.
Severalfactorsmaketheemergencyroomfrightful,andtheyalloriginatefromnotknowing.Inthecaseofdischarge,apatient
Itisgenerallynotadvisable___________(一个女人在怀孕第28周时乘飞机旅行).
随机试题
设向量α=,则α与β的内积(α,β)=__________.
桶状胸常见于()
动脉瘤破裂形成血肿的发生率,以何者最高
诊断渗出性胸膜炎下列哪项检查最有价值
下列关于二重感染的叙述中,说法不正确的是()。
导游员获得领队合作与支持的首要因素是支持领队工作。
我国自改革开放以来,对市场经济认识上的重大突破是()
在资本主义国家的对内职能中,最主要的职能是()
Thecarwasrepairedbutnotquitetomy______.
EachofQuestions1to7presentstwoquantities,QuantityAandQuantityB.Comparethetwoquantities.Youmayuseadditional
最新回复
(
0
)