Section 13A-2-25
Criminal liability based upon behavior of another - Certain defenses not available.
In a prosecution for an offense in which criminal liability is based upon the behavior of another person pursuant to this article, it is no defense that:
(1) Such other person has not been prosecuted for or convicted of any offense based upon the behavior in question, or has been previously acquitted thereof, or has been convicted of a different offense or degree of offense.
(2) The defendant belongs to a class of persons who, by definition of the offense, are legally incapable of committing the offense in an individual capacity.
(Acts 1977, No. 607, p. 812, §425.)