1·The disease is caused by a defective gene.
这种病是由基因缺陷引起的。
2·Thee disease is caused by a defective gene.
这种疾病是由基因缺陷引起的。
3·A defective gene.
有缺陷的基因。
4·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。
5·This defective gene was supposed to come from a common ancestor.
这个缺陷基因可能都来自一个共同的祖先。
6·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。
7·Rhys had acquired a defective gene on the X-chromosome-inherited from his mother.
里斯的X 染色体是一个基因有缺陷（这个X 染色体是从母亲那里继承的）。
8·Evidence is accumulating that a defective gene may be responsible for this disease.
多的证据表明该疾病是由一种有缺陷的基因引起的。
9·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。
10·Gene Therapy identifies missing or defective genes that cause cancer or increase cancer risk, and replaces them with normal copies.
基因治疗是明确导致癌症或者增高癌症风险的缺失或者缺陷基因，从而以正常基因替代之。