Mutations Made Easy

“Deleterious”, “beneficial” and “neutral” are terms that describe the action of particular mutations with respect to the environment.

Are you sure you aren't confusing deleterious with deletion?

Thanks for your feedback. However, I’m afraid you’re mistaken. “Deleterious” is the correct term. A deletion, as you mention, is a type of mutation. “Detrimental” can be used as a description of the result of the mutation, but is not the accepted terminology for what I was describing.