The gene is only part of the causation of illness.

　　基因只是致病的部分原因。

　　Now, the gene they discovered today doesn't account for all those cases.

　　不過，他們現(xiàn)在發(fā)現(xiàn)的基因無法解釋所有的病例。

　　Girls in an affected family can also be tested to see if they carry the defective gene.

　　染病家庭的女孩們也可以檢查一下，看看是否攜帶這種缺陷基因。