a gene that has changed so that the normal transmission and expression of a trait is affected

given the correct copy as a template, the recombination event occurred at the break site and 11 percent of the cells tested had traded one copy of the mutant gene for the correct version.

给予正确的版本作为模板，经检测，在断裂位点发生的重组事件中，11％的细胞用一个一个突变基因交换了一个正确的基因。

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。

now, with next-generation sequencing, one can even identify a mutant gene in a single appropriate family.

2011：「现在，随着下一代的排序，人们甚至可以确定在一个普通家庭的一个突变基因。」

if we can use her dna to find that mutant gene then we can test it in laboratory animals to see if we can switch if off and slow down the ageing process at will.

如果我们能够在她的dna当中发现变异的基因，我们可以在其他动物身上试验这些基因，看我们能否任意减缓老化的过程。

butterfly bettas have the mutant gene that causes variegated fins with a very specific fin pattern.

鱼 因基因突变拥有色彩斑驳的鳍及特殊的花色。

a mutant gene rather than anti social tendencies may be the cause of people going to sleep and waking up unsociably early, scientists said on wednesday.

科学家周三称有些人睡得异乎寻常地早，而醒得也早是由一种突变基因决定的，而不是他们追求逆反社会潮流的结果。

compared with the normal mice, those with one mutant gene slept about 1.2 hours less, and mice with two mutant genes slept 2.5 hours less.

与正常的老鼠相比，携带一个变异基因的老鼠睡眠时间少1.2小时，而携带有2个变异基因的老鼠睡眠时间少2.5小时。

at the same time, the mutant gene would undergo its ownprocess of evolutionary refinement, and would end up slightly different in eachof the daughter species.

与此同时，突变基因会经历自身的进化完善过程，造成每一子代身上都有轻微的差异。

therefore, the exploitation, research and utilization of chlorophyll-deficit mutant gene of rice have been highlighted.

因此，水稻叶绿素合成缺陷突变基因的发掘、研究和利用一直受到人们的重视。

results the recombinant plasmid with mutant gene was constructed correctly.

结果突变基因重组表达质粒构建正确；