GENETICS-I is a simple model of a potentially complex system. It is written as an expert system to work on small phenotype problems. In this paper the overview of genetics is simplistic, for the real issue will be the resolution of complex genetic problems. The authors do not state that they have solved the complex. Rather, they provide “possible local data structures for extended problems.” Proof that these actually work would be helpful in evaluation of the model. The detailed description of the data structure is a useful model for expert system work. It implies the attributes and their limits, while also providing a range of possibilities. Opening up the “fuzzy set” concept for efforts of this type is reasonable and should be so identified. Indeed, it is this option that could make this a most productive system. The production rules presented are reasonable for the model, but could be incomplete if a more complex situation is presented. Overall, this is a nice preliminary report; we await further experience with the more complex world state to confirm its usefulness.