Mutation has been and always will be an essential fact of life,since it is through mistakes in gene replication that the positive genetic variants arise which are the lifeblood of evolution.

• 基因突变（变异）过去一直是，将来也还是生命现象中的基本现实存在。因为正是通过基因复制过程中的错误才可能产生积极的基因变异。这正是进化的生命力所在。