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SSS 2008-12-16

时间:2010-05-15 07:24来源:互联网 提供网友:木渐浅。   字体: [ ]
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.

 

Sarah Palin on the campaign trail was at times dismissive of science. She attacked fruit fly research, saying that tax dollars were going to “projects having little or nothing to do with the public good, things like fruit fly research in Paris, France. I kid you not.”

Well, as the mother of a special needs baby, maybe Palin should check out a report in the current issue of the journal Nature Neuroscience. University of Alberta researcher Francois Bolduc keeps 300,000 fruit flies in a basement laboratory. He discovered that disrupting one gene1 known as FMR1 in the flies’ brains can wipe out their long-term memory. What’s interesting for us is that damage to that gene in people is associated with learning and memory problems, epilepsy and autism. That constellation2 of traits is known as fragile X syndrome3. Bolduc then worked on curing his forgetful flies—he found a class of drugs that reduces the activity of the FMR1 gene. And the insects were able to regain4 their memory. Which could point to treatments for fragile X syndrome in humans. Thanks to fruit fly research in Alberta, Canada. I kid you not.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Cynthia Graber.

 

Announcer: For more on McCain-Palin science slipups, listen to the December 17th episode of the weekly SciAm podcast, Science Talk, and check out the Anti Gravity column in the January issue of Scientific American magazine, also available at SciAm.com/sciencemag

 


点击收听单词发音收听单词发音  

1 gene WgKxx     
n.遗传因子,基因
参考例句:
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
2 constellation CptzI     
n.星座n.灿烂的一群
参考例句:
  • A constellation is a pattern of stars as seen from the earth. 一个星座只是从地球上看到的某些恒星的一种样子。
  • The Big Dipper is not by itself a constellation. 北斗七星本身不是一个星座。
3 syndrome uqBwu     
n.综合病症;并存特性
参考例句:
  • The Institute says that an unidentified virus is to blame for the syndrome. 该研究所表示,引起这种综合症的是一种尚未确认的病毒。
  • Results indicated that 11 fetuses had Down syndrome. 结果表明有11个胎儿患有唐氏综合征。
4 regain YkYzPd     
vt.重新获得,收复,恢复
参考例句:
  • He is making a bid to regain his World No.1 ranking.他正为重登世界排名第一位而努力。
  • The government is desperate to regain credibility with the public.政府急于重新获取公众的信任。
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