environmental mutagenesis

例句：

1. 1. Environmental mutagenesis is a field of study that focuses on the effects of natural and artificial selection on genetic variation in organisms.
   环境突变学是研究自然和人工选择对生物体遗传变异影响的领域。
2. 2. In environmental mutagenesis research, scientists are studying how mutations can affect the ability of organisms tosurvive and reproduce in their natural environments.
   在环境突变学研究中，科学家们正在研究突变如何影响生物体在自然环境中生存和繁殖的能力。
3. 3. The development of new antibiotics often involves environmental mutagenesis techniques, which involve introducing foreign DNA into bacteria to create new variants with improved resistance to antibiotics.
   开发新抗生素往往涉及环境诱变技术，这包括将外来DNA引入细菌中，以产生具有更好抗药性的新变种。