
(A) Size frequency distribution of overlapping genes. Sizes, which are in-frame (i.e., multiples of three), are indicated with filled circles and out-of-phase overlaps have open circles, both with a solid line. The cumulative distribution is plotted as a dashed line. Individual tandem and antiparallel graphs (data not shown) have nearly identical patterns. (B) Distribution of tandem overlaps relative to respective phase maxima above six bases. Tandem in-phase observations were excluded because of few observations. (C) Distribution of antiparallel overlaps relative to respective phase maxima above six bases.











