Fig. 2.

The distribution of four inherent features—spacer length (a), copy length (b), percent match (c), and percent A+T (d)—of the full set of IRs found in this study. Values for the 100,514 IRs found in the S. cerevisiae genome are indicated in blue, while those for a representative RA genome are in red. In part (d) we indicate by arrows the S. cerevisiae genomic A+T content (61.7%) and the average A+T content of the S. cerevisiae IR set (71.7%)