Scientists have found a genetic mutation that appears to be the cause of Huntington's disease.
科学家们已经发现一个似乎是亨廷顿病病因的遗传突变。
If a copy of a gene is a bit different from the original, that's called a genetic mutation.
如果一个复制的基因与原来的有些许不同，那就叫做基因突变。
Their allele frequencies at numerous genetic loci gradually become more and more different as new alleles independently arise by mutation in each population.
随着新等位基因在每个群体中独立突变产生，它们在许多遗传位点上的等位基因频率逐渐变得越来越不同。
Founder mutations are a class of disease-causing genetic mutations, each derived from its own ancestral "founder" in whom the mutation originated.
创始者突变是一类引起疾病的基因突变，每一种都源自其自身祖先的“创始者”。
A genetic mutation in our recent ancestors caused their descendants to have roomy skulls that accommodated larger brains.
我们祖先的一个基因变异使得他们的后代拥有能够容纳更大的大脑的头骨。
Cells with a growth advantage expand faster and dominate. However, this can come at the price of genetic mutation, so growing fast is not always desirable.
有生长优势的细胞能迅速繁殖，成为优势种群。但是，这通常是由基因突变引起，并不是我们所期望的正常生长。
But those changes are not passed on indefinitely, like a successful genetic mutation would be. Instead, they are wiped out over a generation or two.
但这些变化并不像成功的基因突变一样，能够永久地遗传下去，实际上它们往往在一两代的时间里就会消失。
Also, some shorter people possess a rare genetic mutation, known as the "Methuselah gene," that seems to extend their life spans.
但是恰恰是一些个子不高的人会有很少见的基因突变，也就是“高寿基因”，它可以延长寿命。
A genetic mutation causes people to be born without fingerprints, a new study says.
一项新研究表明，基因变异导致一些人生来无指纹。
The Chrysalids tackles the idea of genetic mutation, possibly caused by nuclear war, and the Kraken Wakes tells of a world drowned by rising sea levels.
《蛹》提出了可能缘于核战争的基因变异这个话题；而在《海龙苏醒》中，海平面不断上升导致了世界被淹没。
More clues are coming from lab mice that have a genetic mutation that allows them to partially regrow severed digits.
更多的线索来自实验鼠身上，基因突变使得它们部分地再生长出断掉的脚趾。
Longo's research led him first to a particular type of genetic mutation and ultimately to the mountains of southern Ecuador to study people with Laron syndrome.
朗格首先发现了一种特殊的基因变异，然后顺藤摸瓜，找到了厄瓜多尔南部山区的一群有莱伦氏综合症的人。
But imagine if a genetic mutation arose in one member of a female-female pair that enabled her to distinguish her egg from that laid by her partner, says Bailey.
但是请想象一下，如果一定数量的雌雌伴侣某个基因发生突变，并且使它有能力区别哪个是自己产的卵，哪个是它同性伙伴的，贝利说。
A study in 2006 found older men are more likely to father dwarves, due to an age-related genetic mutation in their sperm.
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。
Early farmers selected out wheat that, due to a random genetic mutation, didn't shatter and was thus ideal for harvesting.
早期的农民拣出那些因随机的遗传变异而没有碎裂的小麦，由于不会碎裂，因而它们是收获的理想之选。
To find out, they studied mice that were naturally obese because of a rare genetic mutation.
为此，他们研究因为罕见的基因突变而自然肥胖的老鼠。
In other words, it may be a particular genetic mutation of a serotonin-receptor gene, and not the employer's incentives, say, that is making people happier with their work.
换句话说，是血清素受体基因的某个特定遗传突变，而不是雇主的激励，使得人们对自己的工作更满意。
But a genetic mutation leads to defective microglia, which drive the mice to perform the odd, self-mutilating behavior.
而有基因突变导致小胶质细胞产生缺陷，从而驱使实验鼠反复进行着怪异的自我残害的行为。
The first is some kind of genetic mutation that a child is born with followed by a trigger in childhood such as an infection that results in the disease, she added.
第一是儿童生来便带有的基因突变，接着需在儿童阶段有个触发事件，比如导致疾病的感染等。
The accepted scenario was a simple case of evolutionary selection. In a bacterial population exposed to a killer drug, a few lucky individuals might have a genetic mutation that kept them alive.
我们本以为这是再简单不过的进化选择了：当药物杀向全体细菌时，总有那么几个幸运儿，基因突变了，小命保住了，它们可以活下来继续繁殖下一代，而剩下的那些倒霉蛋就从此命归黄泉了。
Fragile X syndrome, a single genetic mutation on the X chromosome, is the most common source of inherited mental impairment, affecting one in every 4,000 boys and one in every 6,000 girls.
脆性X综合征，一个X染色体上的基因突变，是遗传性智力障碍最常见的来源，每4000名男孩和每6000名女孩中就有一名儿童患有该症。
Fragile X syndrome, a single genetic mutation on the X chromosome, is the most common source of inherited mental impairment, affecting one in every 4, 000 boys and one in every 6, 000 girls.
脆性X综合征，一个X染色体上的基因突变，是遗传性智力障碍最常见的来源，每4000名男孩和每6000名女孩中就有一名儿童患有该症。
Though Fu isn't sure how many people carry such a genetic mutation, she said it's probably rare as the researchers found no other carriers in a sample of 250.
由于研究人员在250份样品中没有发现其携带者，尽管Fu不确定有多少人携带这种变异的基因，但她认为可能很少。
In the 1950s Anthony Allison, a British biochemist, observed that Africans who carry a single copy of the genetic mutation that causes sickle-cell anaemia are protected against malaria.
英国生化学家AnthonyAllison在20世纪50年代观察到非洲人携带单拷贝的基因突变引起的镰状细胞性贫血保护了他们受到疟疾的侵扰。
New findings by Professor Eli Sprecher of Tel Aviv University's Faculty of Medicine and the Tel Aviv Sourasky Medical Center show that a genetic mutation is responsible for this unusual condition.
特拉维夫大学Sackler医学院的Eli Sprecher教授和特拉维夫Sourasky医疗中心表示，造成这一不寻常现象的原因是基因突变。
To figure out how the genetic mutation impacts sleep, Fu and her colleagues genetically engineered mice to have either two copies of the mutant gene or just one copy.
为了去弄清楚基因是如何影响睡眠的，Fu和她的同事用基因工程的手段让老鼠携带2个拷贝的变异基因或者一个。
Researchers have discovered that some people have a rare genetic mutation that decreases their cells' use of a particular growth hormone: insulin-like growth factor 1 (IGF1).
研究人员发现了一些人已经发生了极少量的基因变异，这种变异减少了细胞对某种生长激素（即，胰岛素样生长因子1（IGF1)）的使用。
Researchers have discovered that some people have a rare genetic mutation that decreases their cells' use of a particular growth hormone: insulin-like growth factor 1 (IGF1).
研究人员发现了一些人已经发生了极少量的基因变异，这种变异减少了细胞对某种生长激素（即，胰岛素样生长因子1（IGF1)）的使用。
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