以微核实验和UDS试验对石家庄市饮水有机提取物进行了致突变研究。
Mutagenicity of organic extracts of the drinking water in Shijiazhuang city was studied with micronucleus test and unscheduled DNA synthesis (UDS).
序列分析和突变研究表明，这些去卤化酶相对那些可转化非卤化底物的酶是同源的。
Sequence analysis and mutagenesis studies indicate that several dehalogenases are homologous to enzymes that carry out transformations on non...
这个课程提供的信息是从研究典型系统的遗传变异获得的，这些典型系统都是用于突变研究的，如线虫和果蝇。
This course presents the information that has been collected from studying genetic variation in model systems like nematode and drosophila for mutation studies.
已经采取突变研究来定位该亚单位的反应中心而且该研究提供了能够解释在基因功能方面的序列差别的背景知识。
Mutational studies have been used to map the reaction centres of this subunit and these provide a background which enables interpretation of sequence differences in terms of gene function.
在研究玉米的基因构成时，芭芭拉·麦克林托克发现了一种新的突变基因，这一发现使人们对细胞分化有了更深入的了解。
While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation.
例如，在果蝇身上，研究人员发现了基因震荡器，这种突变导致果蝇在麻醉下剧烈摇晃。
For example, in the fruit fly, researchers have identified the gene Shaker, mutations in which cause flies to shake violently under anesthesia.
本研究旨在构建具有猪 MSTN 前肽基因定点突变的真核表达载体。
This research intended to construct a eukaryotic expression vector with a site-directed mutation of porcine MSTN propeptide gene.
目的是研究多发性皮脂腺囊肿一家系中角蛋白17的基因突变情况。
The objective is to analyse the mutation of K17 gene in a pedigree with steatocystoma multiplex.
之前的研究表明，SHANK3的基因突变与语言能力发育迟缓、学习障碍和泛自闭障碍症有关。
Previous research has shown that gene mutation in SHANK3 is associated with delayed language abilities, learning disability, and ASDs.
但研究人员注意到，这种突变在患有这种疾病的所有家庭成员中并非是个很普遍的现象。
But the researchers noted that the mutation was not common to all family members with advanced sleep phase syndrome.
为了验证此一想法，研究人员培育出三种酵母突变株。
To test this idea, the researchers created three mutant strains of yeast.
不过最新的一项研究发现，更多的情况则是DNA编码序列上同时发生多个位点的突变。
But new research finds that it may be fairly common for multiple mutations to happen in DNA simultaneously.
2006年的一项研究发现大龄男士生养侏儒子女的机率更大，这是由他们与年龄相关的基因突变造成的。
A study in 2006 found older men are more likely to father dwarves, due to an age-related genetic mutation in their sperm.
为此，他们研究因为罕见的基因突变而自然肥胖的老鼠。
To find out, they studied mice that were naturally obese because of a rare genetic mutation.
因为基因的植入有可能导致危险的基因突变。除此之外，研究人员还必须想办法让植入的基因在细胞分化时自动分解。
Because adding new genes may cause unsafe mutations, the researchers must also figure out how to make the new genes delete themselves during cellular division.
这项研究还声称，那些支持人为气候突变(ACC)的怀疑派学者可能缺少“可信的”公众数据记录。
The study also claims that the scientists, who are sceptical of anthropogenic climate change (ACC), tend to hold less "credible" publication records.
虽然研究人员承认研究中的雌蟒有可能是基因突变的怪物，但是他们认为生物学家们应该重新思考爬行动物的繁殖行为。
While researchers admit that the female in the study may have been a genetic freak, they say the findings should press researchers to re-think reptile reproduction.
更多的研究揭示出细胞的基因突变导致了癌症，刺激了癌细胞的生长。
Studies are rapidly revealing the genetic changes in cells that cause cancer and spur its growth.
有2500名基因突变的女性参与了该项为期四年的研究。
The four-year study involved about two thousand five hundred women with the genetic mutations.
研究人员利用Sanger测序鉴定出另外八个病例中相同基因的突变。
The researchers identified mutations in the same gene in an additional eight cases using Sanger sequencing.
根据《The Journalof Neuroscience》4月14日的最新研究，大脑蛋白基因的某个突变会引发癫痫患者心律不齐和猝死。
A mutation in a brain protein gene may trigger irregular heart beat and sudden death in people with epilepsy, according to new research in the April 14 issue of the Journal of Neuroscience.
研究组领头人内村有国说：“突变是进化的推动力。
但是研究者猜想有一个基因突变使得有些人在生长过程中跳过指纹的形成过程。
But researchers suspect a mutation in one gene allows some people to skip the process of forming fingerprints during development.
对南亚人的进一步研究表明，另两大基因也存在突变——GNPTG和NAGPA，在口吃者中发现了这两种基因，而非口吃者中没有。
Further study of South Asians has shown that mutations in two other genes, GNPTG and NAGPA, are found in individuals who stutter, but not in non-stutterers.
但是每个人的变异有细小的影响，所以研究人员开发出一种算法结合了多种突变的共同影响。
Each individual variant had little impact, however, so the researchers developed an algorithm to combine the effects of multiple variants acting together.
同时，研究者们说，这是突变战术的吸引力所在。
And that, researchers say, is what makes the mutation tactic attractive.
傅的团队想要更可控地研究这种基因突变的效果，所以他们改造出一种拥有同种基因变化的老鼠。
Fu's group wanted to study the effect of the mutation in a more controlled way, so they created a strain of mice with the same genetic change.
我们在进一步研究基因突变为何会引起这种睡眠问题的同时，也很可能会了解导致情绪消沉的原因。
As we probe deeper into how this mutation causes sleep problems, it very likely will also give insight to how the mutation will cause depression.
然而在分析了两个父母和他们的孩子的基因图谱之后，研究人员发现父母其实向下遗传了不到半数的突变基因，只有大约30组。
But by analyzing the genomes of both the parents and the children, the team found that each parent contributed less than half that number, only about 30.
在一些家庭中，研究者发现了遵循隐性突变规则的大块的DNA区域丢失。
In some of the families, they found large chunks of missing DNA regions that followed that recessive rule.
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