An insertion mutation is a type of genetic mutation where a piece of DNA is added to a gene sequence. There are several synonyms that can be used to describe an insertion mutation, including "gene insertion," "base insertion," and "sequence insertion." These terms all describe the same phenomenon, which is the addition of extra genetic material to a gene. Other synonyms might include "mutational insertion" or "mutation by insertion." Regardless of the terminology used, insertion mutations can have a variety of effects on an organism's health and development, and understanding how they occur and what their consequences can be is an important part of genetic research.