OBSOLETE. The process by which genetic material undergoes a detectable and heritable structural change. There are three categories of mutation: genome mutations, involving addition or subtraction of one or more whole chromosomes; chromosome mutations, which alter the structure of chromosomes; and gene mutations, where the structure of a gene is altered at the molecular level.
Source:ISBN:0198506732
Comment
This term was made obsolete because mutagenesis is not a valid biological process in which gene products would normally participate. Rather, mutations arise from DNA replication errors or damage by an extrinsic agent.
