Which form of control is the least reversible and most drastic?

Question

Quizplus · Accepted Answer

Alterations of DNA sequence are the least reversible and most drastic form of control because they involve permanent changes to the genetic information of an organism. Once a change is made in the DNA sequence, it cannot be undone, and the effects will be passed on to future generations. In contrast, other forms of control, such as posttranslational modifications, can be reversed to varying degrees and are typically more transient in their effects.

Which Form of Control Is the Least Reversible and Most