近日,墨尔本的科学家在醋蝇体内发现一种基因,能使醋蝇免于多种杀虫剂的伤害。单个基因的一次突变就会使醋蝇能抵抗多种常用的但不是化学性的杀虫剂。令研究人员困惑及担忧的是,仅一次基因突变就能使醋蝇对杀虫剂滴滴涕具有抵抗力,甚至对那些它们从未接触过的杀虫剂也有抵抗力。这一发现 Recently, Melbourne scientists discovered a gene in vinegar flies that can protect vinegar from multiple insecticides. A single mutation in a single gene will make vinegar flies resistant to a variety of commonly used but not chemical insecticides. What confuses researchers is that only one genetic mutation can make vinegar fly resistant to insecticide DDT, even to insecticides they have never been exposed to. This discovery