FIG. 6.
M26 is a hot spot of recombination in cds1. Bars show the mean frequency of cds1+ recombinants (± the standard error of the mean) obtained from crosses between strains with the cds1-T11A and cds1-1 mutations (inset) and M26, atf1, and pcr1 mutations as indicated at the bottom. Each cross was performed three times, except for the atf1 mutant, which was performed twice; error bars for that cross show the range of values obtained. M26ES-I3 and M26-E1 are the M26 sites in the third intron and first exon of cds1, respectively (Fig. 4). Mutations in these sites are indicated by allele numbers (2, 3, and 4) at the bottom (see Materials and Methods for allele descriptions).