Analysis of MKT1 and SAL1 genotypes reveals an aneuploidy also contributes to mrp20-A105E’s variable expressivity. a) Inviable segregants were present among all mrp20-A105E MKT1 SAL1 genotype classes. b) Aneuploid individuals with duplicated Chromosome II showed reduced growth. Aneuploid individuals were not evenly detected across the different MKT1-SAL1 genotype classes.