A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
1 A statement that is completely unbiased is objective whereas a statement that is characterized by the thoughts and the views of the speaker is subjective.  Objective is not characterized by any previous experience of the speaker whereas subjective is certainly characterized by the previous experiences of the speaker.
NRSNG.com Â» Blog Â» Critical Thinking Â» Objective Vs. Subjective Data: How to tell the difference in Nursing. The difference between objective and subjective data seems simple at firstâ¦ but then once you dive into a nursing case study, you find yourself second guessing what you thought was simple. Truth is it is simple; we just make it complicated by over thinking everything.