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
2025-03-24
22
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 (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. " [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
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://tihaiku.com/zcyy/4010823.html
相关试题推荐
Classeswillceasetoexistbythetimecommunism______throughouttheworld.A、
Thepolicearetryingtofindoutthe______ofthewomankilledinthetraffic
Thegeneralwasvery______;hewantedtorulethewholeworld.A、appropriateB、am
Thepolicearetryingtofindoutthe______ofthewomankilledinthetrafficac
Thegovernmentistryingtodosomethingto______betterunderstandingbetween
Withonlyabout1000pandasleftintheworld.Chinaisdesperatelytrying
Wearetryingtomakepeoplemore______tothedifficultiesfacedbythelaid-off
Classeswillceasetoexistbythetimecommunism______throughouttheworld.A、is
Man:I’mtoldthatAliceistryingtofindajobinanelectronicscompany.Woma
Wearetryingtomakepeoplemore______tothedifficultiesfacedbythelaid-off
随机试题
[originaltext]InBritain,justafterthemaintelevisionnewsprogrammes,a
PassageTwo[br]Whyshouldpeoplefearolddiseasesinsteadofnewonesacc
非高灵敏度型吸气式感烟火灾探测器的釆样管网安装高度不应超过()m。A.10
氯丙嗪注射用药引起的直立性低血压宜选用A.肾上腺素 B.去甲肾上腺素 C.异
肝功能试验一般包括A.肝炎病毒测定 B.血清谷氨酸丙酮酸转移酶测定 C.血清
杜牧有诗云:“十里长街市井连,月明桥上看神仙”。诗中所描绘的扬州盛况主要得益于(
脾不统血证的表现应除外哪项A.便血尿血 B.月经过多 C.崩漏下血 D.鼻
护士准备按医嘱给患者注射西地兰0.1mg,西地兰针剂的剂型是0.4mg/2mL。
下列属于政府采购监督检查的主要内容的是()。A、政府采购人员的专业技能 B、政
根据《建设工程工程量清单计价规范》(GB50500--2013),工程量清单应由
最新回复
(
0
)