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.
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.