An interlock system for a circuit-interrupting device. More particularly, the present invention is directed to nucleic acids encoding MRE11, which is a protein involved in modulation of cellular proliferation. The first set of m-ary decision representations of the logic function is then built with one of the set of a depth-first technique or a breadth-first technique until the first size limit is reached, and a second set of m-ary decision representations of the logic function is built with the other technique until the second size limit is reached. A transfer mechanism includes a first sprocket fixed for rotation with the second member, a second sprocket fixed for rotation with the input shaft and a flexible member interconnecting the first and second sprockets.