Why Women Live Longer Than Men -- Edward Donick If you could take an immense group snapshot of everyone in the United States today, it would contain six million more females than males. In this country, women outlast men by about seven years. Through

发表于:2018-12-07 / 阅读(95) / 评论(0) 分类 老友记精校版第1季

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(81) / 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(105) / 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(82) / 评论(0) 分类 基因外遗传现象

发表于:2018-12-08 / 阅读(90) / 评论(0) 分类 医务英语

VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Doug Johnson. VOICE TWO: And I'm Mario Ritter. Today, we will tell about the two thousand nine Nobel Prizes for discoveries in science. We also will tell about progress against acqui

发表于:2018-12-15 / 阅读(195) / 评论(0) 分类 VOA慢速英语2009年(十二)月

This is scientific american 60-secs science. I'm Sophy Bushwick. Got a minute? It takes a white chromosome to make a man, but that does't mean its counterpart, the x-chromosome, plays no part. In fact it has a big role in making sperm. To study x evo

发表于:2018-12-24 / 阅读(67) / 评论(0) 分类 Scientific American(七)月

In this Moment of Science Yael and Don discuss how women can see more color. Yael: Not only are eight percent of men colorblind, but even compared to men who can distinguish between reds and greens, many women may live a more colorful existence. That

发表于:2018-12-28 / 阅读(136) / 评论(0) 分类 初学者听力文摘精选

World Down Syndrome Day is on March the 21st every year. It is on this day because the number 21 is important in the identification of Down Syndrome. The condition is created by a 21st, extra chromosome being replicated three times, thus causing the

发表于:2018-12-29 / 阅读(66) / 评论(0) 分类 世界节假日博览

Dermatan sulphate - a glycosaminoglycan found in skin, tendon, blood vessel and heart valves. Desmosomes -one of the types of cell junctions by which cells join or communicate with each other. Desmoso

发表于:2019-01-03 / 阅读(95) / 评论(0) 分类 医务英语

Cemento-enamel junction- the junction between the enamel covering the crown of the tooth and the cementum covering its root. Often referred to as the CEJ. Cementoblasts - cells of mesenchyme origin, i

发表于:2019-01-03 / 阅读(52) / 评论(0) 分类 医务英语

SCIENCE IN THE NEWS - Ever Wonder Where Your Ancient Ancestors Lived? By Nancy Steinbach and Jill Moss Broadcast: Tuesday, May 10, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA SPECIAL E

发表于:2019-01-07 / 阅读(86) / 评论(0) 分类 科技之光

Are you in the holiday spirit yet? Well, let's take you Cross Country, beginning in Pittsburgh, Pennsylvania. You might now. Its pretty. Bob Cox loves to make the holiday light display a pretty big spectacle with 150,000 computer-animated lights. Now

发表于:2019-01-07 / 阅读(92) / 评论(0) 分类 CNN2010年(十二)月

PEOPLE IN AMERICA - Barbara McClintock By George Grow Broadcast: Sunday, May 29, 2005 (THEME) VOICE ONE: I'm Doug Johnson. VOICE TWO: And I'm Barbara Klein with PEOPLE IN AMERICA in VOA Special Englis

发表于:2019-01-11 / 阅读(109) / 评论(0) 分类 People in America

This is the VOA Special English Health Report. Deep inside each cell in our body is all the genetic information needed for life. Human genes are normally organized along forty-six chromosomes -- twenty-three from each parent. David Petersohn of Libe

发表于:2019-01-11 / 阅读(164) / 评论(0) 分类 VOA慢速英语2008年(九)月

AS IT IS 2016-07-08 Google Honors American Scientist Nettie Stevens Goole新Doodle致敬美国科学家内蒂史蒂文斯 This is Whats Trending Today The Internet search engine Google celebrated a woman scientist on Thursday. Her name might not be w

发表于:2019-01-12 / 阅读(58) / 评论(0) 分类 2016年VOA慢速英语(七)月

Now in the nature area, we look at whether or not we are innately equipped with something, 在天份的方面,我们必须要检视我们是否生来就有这天赋, perhaps in our brains, some abnormal chromosome that causes this muse-like effec

发表于:2019-01-18 / 阅读(58) / 评论(0) 分类 TED演讲设计篇

Tick-tock, tick-tock. Is that your biological clock? And if it is, are you female? Most people think biological clocks are strictly female phenomena, with infertility and the risk of certain diseases going up with a mother's age. But the biological c

发表于:2019-01-22 / 阅读(69) / 评论(0) 分类 英语时差8,16

We might think perfect pitch is an innate talent. Well, a study in the American Journal of Human Genetics is providing some evidence for that. Perfect pitch, aka absolute pitch, is the rare ability to name or recreate musical notes like A or middle

发表于:2019-01-30 / 阅读(124) / 评论(0) 分类 60秒科学

Furthermore, the fossil had Neanderthal mitochondrial DNA. This is passed from mother to child, 此外,化石中有尼安德塔线粒体DNA。这是从母亲基因中遗传下来的, which meant that either the teenager was the daughter of a Deni

发表于:2019-02-16 / 阅读(59) / 评论(0) 分类 经济学人科技系列