染色体不分离

chromosome nondisjunction的用法和样例：

例句

Autopoly-ploids may arise from the fusion of diploid gametes that have resulted from the NONDISJUNCTION of chromosomes at meiosis.同源多倍体通常可能来自在减数分裂过程中染色体不分离导致的二倍体融合。

Sleepwalking

Alice: Hello, I'm AliceStephen: And I'm Stephen. Alice: And this is 6 Minute English! This week were talking about sleepwalking. Have you ever walked in your sleep, Stephen? Stephen: I dont think so, but Ive been known to tell stories in my sleep. Al

发表于:2018-11-29 / 阅读(444) / 评论(0)

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第1章人与生物 1 人体

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专业术语—基因专业词汇R/S

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SSS 2009-12-10

Little girls are made of sugar and spice and, according to a study published in the journal Cell, a fierce determination to maintain their girlishness. Because it seems that a single gene keeps their ovaries from turning into testes. Scientists have

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III. Listening In Task 1: A Friendly Stylist Stylist: Morning, sir. This chair, please. What can I do for you? Nick: A simple haircut: short on the back and sides. Stylist: Very good. I can, of course, do something fashionable for only $60. Nick: 60

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科技之光

The extinction of men

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发表于:2019-01-08 / 阅读(550) / 评论(0)

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发表于:2019-01-08 / 阅读(328) / 评论(0)

阅读空间

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This is the VOA Special English Health Report. A miscarriage is the natural loss of a pregnancy before the twentieth week. This happens to as many as twenty percent of known pregnancies. Experts say many pregnancies end before a woman even knows she

发表于:2019-01-11 / 阅读(294) / 评论(0)

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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

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A shortage of genes could be to blame for the lack of height in short people, researchers have found. Two studies involving 12,000 people has been carried out in America and found a link between the amount of missing genetic material and a decrease i

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发表于:2019-02-16 / 阅读(286) / 评论(0)

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1 Compared with conventional beef, grass-fed beef is higher in this health-promoting nutrient, which gives its fat a yellow color: 1、与传统牛肉相比，草饲牛肉中某种有益健康的营养素含量更高，并让脂肪呈现黄色，这种

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学英语单词

acquisition number

adzs

aluminum steel

analog data distributor and computer

asteatotic dermatitis

at the heart of

atresia and stenosis

autohaus

automated nautical chart index file

auxiliary earth

be level with someone