(a) A consent or relinquishment may not be given by the mother or accepted until 12 hours after the birth of a child. Any consent or relinquishment given by the mother before 12 hours after the birth of a child is voidable, prior to the final decree of adoption.

(b) A consent or relinquishment may be given by any father or possible father any time after the birth of a child. A consent may be given by any father or possible father before the birth of the child only if he has the advice of independent legal counsel as to the consequences of the consent prior to its execution. The attorney providing independent legal advice shall be present at the execution of the consent.