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SSS 2008-05-13

时间:2010-05-14 01:13来源:互联网 提供网友:0922013129   字体: [ ]
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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?

Robin1 Williams thought that the platypus2 was cobbled together by an inebriated3 deity4: “Let’s take a beaver5.  Let’s put on a duck’s bill.”  Now we know how weird6 the platypus is at the genetic7 level.  Because researchers published the sequence of the platypus genome in the May 8th issue of the journal Nature.  Brown University biologist Kenneth Miller8 commented on the platypus genome research that same night at the American Museum of Natural History:“The platypus…has been known for a long time to have a very curious amalgam9 of anatomical features. So the interesting question is when we get a look at its DNA10 would it also have a curious amalgam of genetic features…it sure does.  In fact, parts of it apparently11 were extremely difficult to sequence because they were so different from other mammalian genomes, to which we often compare sequences in order to align12 them and put the sequence together.  It has not just a curious combination of mammalian and reptilian13 physiological14 features, it has a curious combination of mammalian and reptilian genetic features as well.”  “Okay, He’s a mammal.  But he lays eggs!”

Thanks for the minute. For Scientific American's 60-Second Science, I'm Steve Mirsky.


点击收听单词发音收听单词发音  

1 robin Oj7zme     
n.知更鸟,红襟鸟
参考例句:
  • The robin is the messenger of spring.知更鸟是报春的使者。
  • We knew spring was coming as we had seen a robin.我们看见了一只知更鸟,知道春天要到了。
2 platypus 4Obxs     
n.鸭嘴兽
参考例句:
  • The platypus spends a great deal of its time looking for food. 鸭嘴兽要用大量的时间去觅食。
  • One of the mascots was the platypus.吉祥物之一是鸭嘴兽。
3 inebriated 93c09832d9b18b52223b3456adcd31c1     
adj.酒醉的
参考例句:
  • He was inebriated by his phenomenal success. 他陶醉于他显赫的成功。 来自互联网
  • Drunken driver(a driver who is inebriated). 喝醉了的司机(醉酒的司机) 来自互联网
4 deity UmRzp     
n.神,神性;被奉若神明的人(或物)
参考例句:
  • Many animals were seen as the manifestation of a deity.许多动物被看作神的化身。
  • The deity was hidden in the deepest recesses of the temple.神藏在庙宇壁龛的最深处。
5 beaver uuZzU     
n.海狸,河狸
参考例句:
  • The hat is made of beaver.这顶帽子是海狸毛皮制的。
  • A beaver is an animals with big front teeth.海狸是一种长着大门牙的动物。
6 weird bghw8     
adj.古怪的,离奇的;怪诞的,神秘而可怕的
参考例句:
  • From his weird behaviour,he seems a bit of an oddity.从他不寻常的行为看来,他好像有点怪。
  • His weird clothes really gas me.他的怪衣裳简直笑死人。
7 genetic PgIxp     
adj.遗传的,遗传学的
参考例句:
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
8 miller ZD6xf     
n.磨坊主
参考例句:
  • Every miller draws water to his own mill.磨坊主都往自己磨里注水。
  • The skilful miller killed millions of lions with his ski.技术娴熟的磨坊主用雪橇杀死了上百万头狮子。
9 amalgam 7xAzQ     
n.混合物;汞合金
参考例句:
  • To counter this myth,we explained that we're really an amalgam of little guys.为了打破这个神话,我们解释说,我们确实是由一群小小的老百姓所组成的混合体。
  • American literature is to our eyes a curious amalgam of familiar and strange.我们认为,美国文学把我们所熟悉的和陌生的东西奇妙地结合起来了。
10 DNA 4u3z1l     
(缩)deoxyribonucleic acid 脱氧核糖核酸
参考例句:
  • DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
  • Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。
11 apparently tMmyQ     
adv.显然地;表面上,似乎
参考例句:
  • An apparently blind alley leads suddenly into an open space.山穷水尽,豁然开朗。
  • He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
12 align fKeyZ     
vt.使成一线,结盟,调节;vi.成一线,结盟
参考例句:
  • Align the ruler and the middle of the paper.使尺子与纸张的中部成一条直线。
  • There are signs that the prime minister is aligning himself with the liberals.有迹象表明首相正在与自由党人结盟。
13 reptilian tWfxx     
adj.(像)爬行动物的;(像)爬虫的;卑躬屈节的;卑鄙的n.两栖动物;卑劣的人
参考例句:
  • The chick is ugly and almost reptilian in its appearance. 这只小鸡长得很丑,看起来几乎像个爬行动物。 来自辞典例句
  • Being from Orion do Zetas contain DNA from the Reptilian race? 齐塔人是从猎户座而来,DNA来自爬虫族吗? 来自互联网
14 physiological aAvyK     
adj.生理学的,生理学上的
参考例句:
  • He bought a physiological book.他买了一本生理学方面的书。
  • Every individual has a physiological requirement for each nutrient.每个人对每种营养成分都有一种生理上的需要。
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