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(93) / 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(100) / 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(108) / 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(99) / 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(65) / 评论(0) 分类 基因外遗传现象

1918 Flu's Genetic Code May Help Fight Bird Flu 1918年的流感病毒基因源代码可能帮助人类抗击禽流感 It was the 20th century's greatest plague . Estimates of the 1918-1919 flu death

发表于:2018-12-08 / 阅读(202) / 评论(0) 分类 VOA2005(下)--环境科学探索

发表于:2018-12-08 / 阅读(103) / 评论(0) 分类 医务英语

Its one of the greatest medical mysteries. Why does a person who never smoked a single cigarette end up with lung cancer? While another person who smokes for decades remains cancer-free. The answer may be buried deep inside our genetic make-up. Thre

发表于:2018-12-11 / 阅读(67) / 评论(0) 分类 万花筒2008年

发表于:2018-12-12 / 阅读(116) / 评论(0) 分类 医务英语

Mice with a genetic predisposition to get a Crohn's-like disease were kept healthy until exposed to a virus that apparently triggers the condition. Crohns disease is a real pain in the gut. This inflammatory disorder can lead to some serious intestin

发表于:2019-01-02 / 阅读(150) / 评论(0) 分类 60秒科学

An experiment tracking mice for 43 generations finds that progeny of those that initially were more active are spending three times as much time on the training wheel as the progeny of the initially more sedentary mice. Christopher Intagliata reports

发表于:2019-01-02 / 阅读(113) / 评论(0) 分类 60秒科学

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(69) / 评论(0) 分类 基因外遗传现象

The email was sent by Olov Bygren. He was studying the population records of an obscure town in northern Sweden, Overkalix. What made these records unique was their detail. They recorded births and de

发表于:2019-01-02 / 阅读(106) / 评论(0) 分类 基因外遗传现象

But could this effect be transmitted to their offspring? They found nearly 200 women of whom a number had actually been in the Twin Towers. About half of them developed post-traumatic stress disorder.

发表于:2019-01-02 / 阅读(101) / 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(100) / 评论(0) 分类 基因外遗传现象

The work of these scientists is at last throwing a spotlight onto the mysterious hidden world of epigenetics. They appear to show that the lives of our ancestors have a capacity to affect us directly.

发表于:2019-01-02 / 阅读(108) / 评论(0) 分类 基因外遗传现象

Autism-Related Genes Discovered 人类自闭症基因已被发现发 The human body has about 25,000 genes. Researchers already know of 65 genes they believe carry a risk for autism. Now, researchers at Princeton University in New Jersey have identif

发表于:2019-01-12 / 阅读(75) / 评论(0) 分类 2016年VOA慢速英语(八)月

New Gene Therapy 'Precisely' Targets Cancer 新型基因治疗癌症法精确消灭目标 Cancer is one of the worlds most feared diseases, and with good reason: Its the leading cause of death across the globe. Every year, about 14 million people are

发表于:2019-01-12 / 阅读(66) / 评论(0) 分类 2015年VOA慢速英语(十一)月

Neandertals Live On in Our Genomes也许你身上存有尼安德特人的基因 Fifty thousand years ago, Homo sapiens weren't the only game in town. We were just one of several species of hominids roaming the Earth, like the Neandertals in Eurasia.

发表于:2019-01-20 / 阅读(88) / 评论(0) 分类 2017年Scientific American(六)月

台湾籍旅美老师今天交给我们的句子是: Many other genes have been identified which increase the likelihood of depression too. And it makes sense when you consider that depression and bipolar disorder both run in families. 许多其他的

发表于:2019-02-14 / 阅读(81) / 评论(0) 分类 留美老师带你每日说英文