单词:recessive (mendel 1865)
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Roll Away the Stone I enjoy life because I am endlessly interested in people and their growth. My interest leads me to widen my knowledge of people, and this in turn compels me to believe in the common goodness of mankind. I believe that the normal
讲到遗传学,我们不能不提孟德尔。他的研究奠定了遗传学和现代生命科学的基
-Well, understand, understand: Uh, I have a recessive dance gene, quite frank, because of my complexion. I am I'd like to say, Im a white boy from Oakland, but I am from Oakland you see. So we can I believe in you all, we can do it. -Do it. -So, you
M 畸形 malformation 描图 mapping 标记 marker 黑色素瘤 melanoma 孟德尔 Mendel, Johann (Gregor) 孟德尔遗传 Mendelian inheritance 信使RNA messenger RNA (mRNA) [分裂]中期 metaphase
[00:06.35]READING [00:07.58]THE BIRTH OF A SCIENCE [00:10.19]Before the eighteenth century, botany was merely a branch of medicine. [00:13.90]Unit then, mostly doctors and surgeons studied herbs. [00:17.97]Attempts had been made by others to classify
[00:06.35]READING [00:07.58]THE BIRTH OF A SCIENCE [00:10.19]Before the eighteenth century, botany was merely a branch of medicine. [00:13.90]Unit then, mostly doctors and surgeons studied herbs. [00:17.97]Attempts had been made by others to classify
[00:00.63] 4.The Father of Genetics [00:04.55]His name is introduced to biology students, but often forgotten after the final exam. [00:10.76]His pioneering discoveries went unnoticed by the world until years after his death. [00:15.88]But now, in th
[00:00.00]Unit 6 In the laboratory [00:04.70]1.Listen,read and practice in pairs. [00:11.47]Do you like to do experiments in a laboratory? [00:16.54]What is a science class like? Let's see what these people are doing. [00:23.90]Teacher:Good morning,e
White lions are roaming the African plains once again. Over the past decades, few sightings were reported of these rare big cats in their natural environments. And South African white lions could only be seen in breeding programs and circuses. Now t
Roll Away the Stone I enjoy life because I am endlessly interested in people and their growth. My interest leads me to widen my knowledge of people, and this in turn compels me to believe in the common goodness of mankind. I believe that the normal h
黏黏腻腻的巨蟹老公,彷佛有妈妈的味道。在面对事业和财务时,却又显得勇猛无比,冲锋陷阵,不失英雄本色,巨蟹老公似乎比双子座更具有双面个性。 Cancer Husband The husband of this group love
White lions are roaming the African plains once again. Over the past decades, few sightings were reported of these rare big cats in their natural environments. And South African white lions could only be seen in breeding programs and circuses. Now th
Mendeleyev dutifully completed his studies and eventually landed a position at the local university. There he was a competent but not terribly outstanding chemist, known more for his wild hair and beard, which he had trimmed just once a year, than fo
Mendeleyev used a slightly different approach, placing his elements into groups of seven, but employed fundamentally the same principle. Suddenly the idea seemed brilliant and wondrously perceptive. Because the properties repeated themselves periodic
For most of us, the periodic table is a thing of beauty in the abstract, but for chemists it established an immediate orderliness and clarity that can hardly be overstated. Without a doubt, the Periodic Table of the Chemical Elements is the most eleg
Despite the occasional tidyings-up, chemistry by the second half of the nineteenth century was in something of a mess, which is why everybody was so pleased by the rise to prominence in 1869 of an odd and crazed-looking professor at the University of
PEOPLE IN AMERICA – April 28, 2002: Milton Berle By George Grow VOICE ONE: I’m Mary Tillotson. VOICE TWO: And I’m Doug Johnson with the VOA Special English program PEOPLE IN AMERICA. Today, we t
A mother has beaten odds of a million-to-one by giving birth to a baby who appears to be of a different race. 一位妈妈中了百万分之一的大奖:她生的宝宝和她完全是不同的人种。 Catherine Howarth, 32, from Milton Keynes, is
Roll Away the Stone I enjoy life because I am endlessly interested in people and their growth. My interest leads me to widen my knowledge of people, and this in turn compels me to believe in the common goodness of mankind. I believe that the normal h