This is heavily adapted from the resource posted by Ellen Mayo to the Access Excellence website (http://www.accessexcellence.org/AE/AEC/AEF/1995/mayo_dna.php). It has been edited to fit on one single side of A3, to expedite the cutting-sticking process for students and to more directly address IB Biology assessment statements. Please visit the original resource link for full explanation and instructions: http://www.accessexcellence.org/AE/AEC/AEF/1995/mayo_dna.php