1.Many diseases are the result of a single defective gene on one of the chromosomes.
许多疾病都是由于单个的染色体。
2.Gene therapy is a permanent replacement of a defective gene, usually treating an inherited disorder and usually using a viral vector.
基因治疗通常是利用病毒载体永久性地替换缺陷基因来治疗遗传性疾病。
3.People with this defective gene need two copies to develop the metabolic disorder, but one copy appears to be associated with stammering.
有两对这种缺陷基因的人会发展出代谢疾病，但如果只有一对，似乎就会造成口吃。
4.A next, obvious step was to look for humans with the same defective gene.
很明显，下一步是寻找人类同样缺失的基因。
5.The defective gene that causes Duchenne's and Becker's muscular dystrophies is located on the X-chromosome.
有缺陷的基因导致杜兴的和贝克尔的肌营养不良症是位于X染色体。
6.The disease can skip a generation until another son inherits the defective gene on the X-chromosome.
这种疾病可以跳过一代，直到另一个儿子继承了有缺陷的基因在X染色体上。
7.The defective gene interferes with normal body processes.
缺损的基因会扰乱正常的身体变化过程。
8.The illness is believed to be caused by a defective gene.
这病被认为是由基因缺陷引起的。
9.A third defective gene, which is closely related to the other two, was also found among stammerers but not among the controls.
而第三种有缺陷的基因，与另外两种密切相关，也能在口吃患者身上发现，但是对照组身上就没有。
10.caused by gene deficiency; caused by a defective gene.
由基因缺陷所引起。