[williamjennings]

This notion of "normal random mutation" does not mean anything in terms of molecular biology or genetics. It is equivalent to "Bad Luck", or "mutation triggered by something". The phrase is inappropriately vague because it equates point mutations, insertion mutations and deletion mutations.

As a rule,do not write about data with the modifier "normal random", write "normally distributed" instead; and then make sure that finding is worth mentioning in some field of science.