长毛象死而复生?
文章来源:未知 文章作者:enread 发布时间:2021-02-27 05:05 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
A team of international scientists has published the complete genome of the woolly mammoth1 - a creature which became extinct thousands of years ago.
 
The study, published in the Journal Current Biology, will probably cheer up a team of Harvard University researchers who've been planning to add mammoth genes2 to the stem cells of elephants. Their aim is to find out how the mammoth's adaptations helped them survive the ice ages.
 
The Long Now Foundation, based in San Francisco, is financing the Harvard team and has daring plans for the future if the species is resurrected. It says on its website that its goal is "to produce new mammoths that are capable of repopulating the vast tracts3 of tundra4 and boreal forest in Eurasia and North America."
 
They say: "The goal is not to make perfect copies of extinct woolly mammoths, but to focus on the mammoth adaptations needed for Asian elephants to live in the cold climate of the tundra."
 
But how close are we from a Jurassic-Park-like scenario5 in which extinct animals are brought back to life? Very far, according to some experts. Professor Beth Shapiro, of the University of California, Santa Cruz, wrote a book called How to Clone a Mammoth. She is sceptical and believes there is an enormous difference between an embryo6 in a lab dish and a living animal with some of the characteristics of a mammoth. And we can't even be sure if the elephant's surrogate pregnancy7 would be successful.
 
Woolly mammoths died out some 4,000 years ago. It might take a long time before the fantasy of the Steven Spielberg movies is turned into reality. And that's fine for those of us who can remember that the resurrected dinosaurs8 on the screen gave the humans a pretty hard time. If mammoths come back, maybe it would be a good idea to start running...


点击收听单词发音收听单词发音  

1 mammoth u2wy8     
n.长毛象;adj.长毛象似的,巨大的
参考例句:
  • You can only undertake mammoth changes if the finances are there.资金到位的情况下方可进行重大变革。
  • Building the new railroad will be a mammoth job.修建那条新铁路将是一项巨大工程。
2 genes 01914f8eac35d7e14afa065217edd8c0     
n.基因( gene的名词复数 )
参考例句:
  • You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因,所以能够活得很长。 来自《简明英汉词典》
  • Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
3 tracts fcea36d422dccf9d9420a7dd83bea091     
大片土地( tract的名词复数 ); 地带; (体内的)道; (尤指宣扬宗教、伦理或政治的)短文
参考例句:
  • vast tracts of forest 大片大片的森林
  • There are tracts of desert in Australia. 澳大利亚有大片沙漠。
4 tundra dmtwW     
n.苔原,冻土地带
参考例句:
  • The arctic tundra is at the top of the world around the North Pole.北极冻原是指北极点周边的地区,是世界最高的地方。
  • There is a large amount of methane gas under the Siberian tundra.西伯利亚的冻土地带之下有大量的甲烷气体。
5 scenario lZoxm     
n.剧本,脚本;概要
参考例句:
  • But the birth scenario is not completely accurate.然而分娩脚本并非完全准确的。
  • This is a totally different scenario.这是完全不同的剧本。
6 embryo upAxt     
n.胚胎,萌芽的事物
参考例句:
  • They are engaging in an embryo research.他们正在进行一项胚胎研究。
  • The project was barely in embryo.该计划只是个雏形。
7 pregnancy lPwxP     
n.怀孕,怀孕期
参考例句:
  • Early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。
  • Smoking during pregnancy increases the risk of miscarriage.怀孕期吸烟会增加流产的危险。
8 dinosaurs 87f9c39b9e3f358174d58a584c2727b4     
n.恐龙( dinosaur的名词复数 );守旧落伍的人,过时落后的东西
参考例句:
  • The brontosaurus was one of the largest of all dinosaurs. 雷龙是所有恐龙中最大的一种。 来自《简明英汉词典》
  • Dinosaurs have been extinct for millions of years. 恐龙绝种已有几百万年了。 来自《简明英汉词典》
TAG标签: team mammoth genome
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:点击我更换图片