And it also tells tells us the reasons for our gene mutation. Now, a gene mutation is basically a change in the nucleotide sequence on the DNA that is not a result of genetic recombination. Now, basically, there are two reasons for a gene mutation in the first place. So one of these reasons is a result of an error that might take place in one of the many processes that take place in the body. For example, one process in which an error can basically lead to a g mutation is DNA replication. So, during DNA replication, our DNA polymerase can basically make a mistake and incorrectly base pair a certain nucleotide pair, and that will create our gene mutation.