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The haploid meiosis phenotype of the sng1− mutant is dependent on both efficient switching and the presence of the donor loci
| Strain genotype | Switchability | Haploid meiosis phenotype |
|---|---|---|
| h90 | High | − |
| mat1M mat2,3Δ sng1− | Unswitchable | − |
| mat1P mat2,3Δ sng1− | Unswitchable | − |
| h90 sng1− | High | + |
| mat1Msmto sng1− | Unswitchable | − |
| mat1PΔ17 sng1− | Unswitchable | − |
| h90 swi7− sng1− | Reduced | − |
| h90 swi2− sng1− | Reduced | − |
| h90 swi5− sng1− | Reduced | − |
