Deletion mapping of wildtype and mutant alleles at the B incompatibility factor of Schizophyllum

Summary Strains of Schizophyllum commune carrying mutations at the B incompatibility locus were crossed to strains with wildtype B alleles to determine the recombinational spectra of the mutations. An excellent correlation between recombining ability and mating behavior supports the hypothesis that many wildtype and mutant alleles are associated with deletions and that the degree of impairment of recombination and mating interaction reflects the size of the deletion.This study was supported by a grant from the United States-Israel Binational Science Foundation