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为了评价环境中致突变物质(诱变剂)的潜在危险性,必须了解突变的过程,包括突变的性质、来源以及作用于人的各种因素可能引起突变的方式。同时也应对遗传的机理和在进化过程中突变的作用有所了解。一、基因物质:哺乳类动物(包括其它动物)的生命开始于受精卵,它们之间的区别在于它们的细胞染色体中所含基因物质的不同,这种物质称为生命模版。从化学成分来说,这种物质是脱氧核糖核酸
In order to assess the potential risk of mutagenic substances (mutagenic agents) in the environment, it is necessary to understand the process of mutation, including the nature of mutations, their sources, and the ways in which various factors affecting humans may cause mutations. At the same time, we should also understand the mechanism of genetics and the role of mutations in evolution. First, the genetic material: mammals (including other animals) began life in fertilized eggs, the difference between them is the genetic material contained in the chromosomes of their cells, this material is called a life template. In terms of chemical composition, this substance is a deoxyribonucleic acid.