User blog comment:Deamonicdrone/Mutation Question/@comment-2253300-20130308040421/@comment-4608429-20130308205001

Also depends upon how the mutation was caused. For instance, the Salamanders Black skin and red eyes is due to the way their Geen-Seed reacts with the radiation on their world, not because it's geneticaly inherant. So, what I'm trying to say is that some could be reversed by simpaly changing the place where the Space Marine comes from/what was around them when they where accepting their implants.