We examined mismatch repair (MMR)-defective diploid strains of budding yeast grown for ∼160 generations to determine whether decreases in spore viability due to the uncovering of recessive lethal mutations correlated with an increase in gross chromosomal rearrangements (GCRs). No GCRs were detected despite dramatic decreases in spore viability, suggesting that frameshift and/or other unrepaired DNA replication lesions play a greater role than chromosomal instability in decreasing viability in MMR-defective strains.
|Original language||English (US)|
|Number of pages||5|
|State||Published - 2006|
ASJC Scopus subject areas