single letter change is refered to as a point mutation meaning one residue. it is common there are a number of mutation types and numerous mechanisms. https:/

single letter change is refered to as a point mutation meaning one residue. it is common there are a number of mutation types and numerous mechanisms. https://en.wikipedia.org/wiki/Mutation https://en.wikipedia.org/wiki/Mutation in the case of point mutations, cosmic ray ablation, and wobbly fit of the replication mechanism lead to data corruption, conflated by error prone replication or error prone proof reading