GC tracts associated with CO and NCO repair products. Dotted red and black lines correspond to W303 and YJM chromosomes, respectively. Thick black and red lines are GC and restoration tracts, respectively, and are shown to scale. The vertical gray line indicates the position of the initiating DSB. Events are arranged based on the total GC tract length, from smallest to largest. The blue box highlights the chromosomes that are represented below. (A) CO chromosomes present in each sectored colony. The total GC length was obtained by summing the lengths on each side of the DSB; symmetric tracts were considered a single tract for the length calculation. (B) GC tracts associated with the NCO event in each sectored colony are shown. There were no changes to the black/YJM NCO chromosome, so only the repaired red/W303 chromosome is shown.