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Marcus Pembrey is one of a select band of scientists, a band of scientists who are daring to challenge an orthodoxy . They believe the lives of our parents, grandparents, and even our great grandparen

发表于:2018-12-07 / 阅读(172) / 评论(0) 分类 基因外遗传现象

No body had had seen this kind of thing before, so this was the first time and all the people looking at the gel and saying

发表于:2018-12-07 / 阅读(176) / 评论(0) 分类 基因外遗传现象

After we had seen how relatively easy it was to change the switches in mouse embryos, we thought that perhaps the same could be true of human embryos. In IVF, you also have the embryo for a brief peri

发表于:2018-12-07 / 阅读(176) / 评论(0) 分类 基因外遗传现象

If inheritance was not just about DNA, if these gene switches were so important, just what could turn them on or off? Stephanie and Emend Mullins have two children, Karen and Charlotte. When we were t

发表于:2018-12-07 / 阅读(190) / 评论(0) 分类 基因外遗传现象

It showed that there was clearly more to inheritance than simply the coded sequence of DNA. We then realized that we were dealing with what is now known as genomic imprinting. What genomic imprinting

发表于:2018-12-07 / 阅读(160) / 评论(0) 分类 基因外遗传现象

...lead to the end of diseases like cancer... Alzheimer's , Parkinson's , diabetes. The list is endless. We were thinking of genes in a very mechanical way. We were thinking of them just in terms of t

发表于:2018-12-07 / 阅读(214) / 评论(0) 分类 基因外遗传现象

Named after Henry Angelman, the pediatrician who first described Angelman syndrome. He referred to them as happy puppet children because it described, to some extent, the features. They have a rather

发表于:2018-12-07 / 阅读(169) / 评论(0) 分类 基因外遗传现象

We are on the brink of uncovering a hidden world, a world that connects past and future generations in ways we never imagined possible. What this means is an environmental exposure that your grandmoth

发表于:2018-12-07 / 阅读(146) / 评论(0) 分类 基因外遗传现象

An assistant at the morphing matter lab drops a few pieces of flat dry pasta into a pot of boiling water. In a few minutes, these rigid flat strips will turn into soft spiral shapes called fusilli that can hold a lot of tasty sauce. Packaging dry pas

发表于:2018-12-08 / 阅读(190) / 评论(0) 分类 VOA标准英语2018年(十月)

By Doug Levine Washington 30 April 2006 Donald Fagen likes to take his time. It took his group Steely Dan more than 20 years to tour, and it took the singer and keyboardist even longer to tour as a so

发表于:2018-12-16 / 阅读(238) / 评论(0) 分类 2006年VOA标准英语(四月)

Olov Bygren was looking to see if poor nutrition had an effect on health when he stumbled on something curious. It appeared that a famine could affect people almost 100 years later even if they never

发表于:2019-01-02 / 阅读(148) / 评论(0) 分类 基因外遗传现象

Our studies had really convinced me that it were the later experiences of the child as the child was growing up bombarded with years and years of, em, symptoms from the parents that accounted for the

发表于:2019-01-02 / 阅读(199) / 评论(0) 分类 基因外遗传现象

They discovered that when a famine was able to trigger an effect was different for the grandmother than the grandfather. The grandmother appeared susceptible while she herself was still in the womb, w

发表于:2019-01-02 / 阅读(178) / 评论(0) 分类 基因外遗传现象

The impact of a famine being captured by the genes in the eggs and sperm, and a memory of this event was being carried forward to affect the grandchildren, generations later. We are changing the view

发表于:2019-01-02 / 阅读(169) / 评论(0) 分类 基因外遗传现象

Some bacteria have adapted to super cold environments for millions of years. And scientists have isolated some of the essential genes that allow bacteria to tolerate their harsh living conditionsbecause these same genes might help in the creation of

发表于:2019-01-11 / 阅读(219) / 评论(0) 分类 英语杂谈

DAVID GREENE, HOST: All right. So genetic tests can help you explore your heritage, but can your DNA also tell you what diet is best for you? NPR's Allison Aubrey asked that question. ALLISON AUBREY, BYLINE: If you're curious about personalized nutri

发表于:2019-01-16 / 阅读(137) / 评论(0) 分类 2018年NPR美国国家公共电台1月

RACHEL MARTIN, HOST: Chances are you have seen an ad for a test to find out about your ancestry. Maybe you got a kit for Christmas, and now you're waiting for your results. So what do you need to know when you open these results? Health editor Gisele

发表于:2019-01-16 / 阅读(164) / 评论(0) 分类 2018年NPR美国国家公共电台1月

Every year, TIME selects the best inventions that are making the world better, smarter andin some casesa little more fun. Here's which ones made this year's unranked list. 每年《时代》周刊都会选出让世界变得更美好、更智能或者更

发表于:2019-02-07 / 阅读(188) / 评论(0) 分类 英语新闻

And the powerful lobby group Manufacture Australia has chosen controversial former underwear Queen Sue Morphett as its new chairwoman. And she resigned last year as the Chief Executive of Pacific Brands where she axed 1,800 jobs and moved production

发表于:2019-02-14 / 阅读(180) / 评论(0) 分类 澳洲ABC新闻快递2013年

BEIJING, Aug. 5 (Xinhuanet) -- A study conducted by Israeli researchers at the Albert Einstein College of Medicine in New York shows that genes, rather than good eating and lifestyle habits, determine longevity, according to media reports Friday. Thi

发表于:2019-02-26 / 阅读(212) / 评论(0) 分类 英语新闻
学英语单词
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