Also the exposure induced the neuron cell's DNA chain to rupture and the damage displayed an dose-effect relation and may persist for a long time.

大鼠出生前暴露于甲基对硫磷和氯氰菊酯混配引起脑细胞dna链断裂损伤，呈剂量-反应关系，这种效应在子鼠可能持续一段较长的时间。

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Past mathematical models of evolution have focused largely on how populations respond to point mutations - random changes in single nucleotides on the DNA chain, or genome.

过去有关进化的数学模型主要用于研究点突变对物种的影响，即DNA链或基因组中的单核苷酸的随机突变。

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The visualization on "Hollow" is a mindtrip (especially with the crisp clarity you see it in on the iPad app) taking you through the DNA chain, kind of like a more surreal Magic School Bus.

《Hollow》的视频是一次心灵之旅（尤其你用清晰的iPad看）带你穿过DNA链，更有点像超现实的《魔幻校车》（系列儿童读物）。

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If I wanted to link another nucleotide to this DNA chain what would I attach here on the bottom?

如果想把另一核苷酸连接到这条DNA链,我将会在DNA链末端添加什么

耶鲁公开课 - 生物医学工程探索课程节选

You can just say it's RNA or DNA and you know everything about the pentose in every molecule on the chain.

你只需要说它是一个RNA或者DNA,就能知道,每个核苷酸分子的戊糖

耶鲁公开课 - 生物医学工程探索课程节选

The FSA also said that late last month a burger from hotel chain Whitbread had tested positive for horse DNA above 1%.

BBC: Horse DNA found in two takeaway burgers, FSA says

Ms. Dewey-Hagborg amplifies small DNA strands using a technique called PCR polymerase chain reaction.

WSJ: Art Emerges from DNA Left Behind

In particular, this sensitivity makes the new chips better at searching for strands of DNA. At the moment, such searches require the number of DNA molecules in a sample to be multiplied using a trick called the polymerase chain reaction before there is a decent chance of detecting the target.

ECONOMIST: Labs on a chip