The Inference Chart is expected to be particularly useful in cases using DNA fingerprinting. The principles upon which the Inference Chart concept is based allow science and law to be mixed and justice to be served. In the case of DNA profiling, the Inference Chart allows jurors to determine whether proficiency testing and quality control were sufficient, whether preconditions for sample and probe were met, whether control conditions were satisfied, whether the profile met standard criteria, whether the statistics were adequate, and what the probabilities of random inclusion were. Quality assurance through independent checking is vital to guard against the errors in methodology or logic to which DNA fingerprinting is prone. 2 figures and 3 references