首页
登录
职称英语
With only about 1 000 pandas left in the world, China is desperately trying
With only about 1 000 pandas left in the world, China is desperately trying
游客
2025-03-18
53
管理
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 Missy-plicity 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. " [br] 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
此题是一道具体细节题。问题问按照克莱墨教授的意见,在克隆大熊猫的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会成为一个主要问题。因此,本题的正确答案应是B。
转载请注明原文地址:https://tihaiku.com/zcyy/4001966.html
相关试题推荐
Woman:Iamtryingtofindouthowthisdishwasherworks.ThemanualisinFrenc
Withonlyabout1000pandasleftintheworld.Chinaisdesperatelytrying
Withonlyabout1000pandasleftintheworld.Chinaisdesperatelytrying
Withonlyabout1000pandasleftintheworld,Chinaisdesperatelytrying
Withonlyabout1000pandasleftintheworld,Chinaisdesperatelytrying
Withonlyabout1000pandasleftintheworld,Chinaisdesperatelytrying
Withonlyabout1000pandasleftintheworld,Chinaisdesperatelytrying
由于缺乏资金,他们正在想办法吸引外资。Forlackofcapital,theyaretryingeverymeanstoattractou
【B1】[br]【B10】A、insistingB、joiningC、managingD、tryingDtrying,试着,尽力。尽力去帮助那些需要
【B1】[br]【B3】A、triestoreasonB、triesreasoningC、tryingreasoningD、tryingto
随机试题
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearlies
TheHistoryofLaborDayLaborDay:HowitCameAbou
习近平总书记在十八届三中全会上指出:“我们在改革开放上决不能有丝毫动摇,改革开放
A.1~3B.2~4C.3~5D.2:1E.1:2生物素与lgG比值为多少时,效
某建设项目工器具及生产家具购置费为1500万元,建筑安装工程费用4500万元,工
简述现代企业人力资源管理各个历史发展阶段的特点。
由乙酰辅酶A在胞液中合成1分子硬脂酸需多少分子NADPH+H+A.14分子
教育史上两大对立学派——传统教育派与现代教育派的代表人物分别是()。 A.凯
(2021年真题)三七凝胶贴膏剂处方组成:三七提取物2g、薄荷脑2g、樟脑3g、
生产者对生产要素的需求具有相互依赖性,各种生产要素要共同发挥作用才能生产最终产品
最新回复
(
0
)