Editing Nonsense mutation (section)

=== Beneficial ===
Beneficial nonsense mutations are considered as the rarest of possible nonsense mutation outcomes. Beneficial nonsense mutations increase the overall fitness and reproductive success of an organism, opposite of the effects of a deleterious mutation.<ref name=":11" /><ref name=":4" /> Because a nonsense mutation introduces a premature stop codon within a sequence of DNA, it is extremely unlikely that this scenario can actually benefit the organism.<ref name=":1" /> An example of this would occur with a nonsense mutation that impacts a dysfunctional protein that releases [[toxin]]s. The stop codon that this mutation brings would stop this dysfunctional protein from properly carrying out its function. Stopping this protein from performing at full strength causes less toxin to be released and the fitness of the organism to be improved. These types of situations with nonsense mutations occur a lot less frequently than the deleterious outcomes.<ref name=":4" />