Without knowing the specific mutation or its effects, it is impossible to determine the most likely outcome. Mutations can have a wide range of effects, ranging from no noticeable change to severe health conditions or even death. Additionally, the outcome can vary depending on factors such as the location of the mutation, whether it occurs in a coding or non-coding region of the DNA, and how it impacts gene function. It would be necessary to have more details about the specific mutation to predict the most likely outcome accurately.
