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 Objective can be defined as not being influenced by personal feelings or opinions. 2  Subjective can be defined as based on personal opinion.  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.
A goal can be viewed as an aim or desired outcome. An objective is a step or a sub-goal that assists the individual to achieve his goal. This emphasizes that there is a clear difference between a goal and an objective and that they refer to two different things, although they are related.n objective is a step or a sub-goal that assists the individual to achieve his goal. This emphasizes that there is a clear difference between a goal and an objective and that they refer to two different things, although they are related.