1.S. cerevisiae can switch mating types. Which of the following statements correctly summarizes where the information comes from for it to do this? Solution Saccharomyces cerevisiae occurs in two forms, the haploid and diploid. The haploid cells undergo mitosis, which die under the conditions of higher stress. The preferential form of the yeast is diploid, which undergoes growth by mitosis. In cerevisiae, the cells of opposite mating type are present in the same ascus. They are produced by a single meiosis and mate with each other. Means, the organism can switch mating types. The mating locus contains two-mating loci in inactive state, which provide the information to replace the inactive copy at the mating locus with the active copy..