The mating reaction in yeast. II. Spontaneous occurrence of omni-mating types.
Meiosis in diploids of Saccharomyces cerevisiae either homozygous or heterozygous for the dmt gene result, in about 5% of the meiotic products, in spores which have undergone an interconversion at the mating-type locus. Some of these interconversions appear to be the result in the generation of spontaneous omni-mating strains. This phenomenon has now been quantitated and the distribution of mating-type loci in these "natural" amni-mating types determined.
D004171:Diploidy; D005838:Genotype; D008540:Meiosis; D009154:Mutation; D010641:Phenotype; D011995:Recombination, Genetic; D012441:Saccharomyces cerevisiae / Q000378:metabolism*; D013170:Spores / Q000378:metabolism