Final answer:
The genotype of the parents in the corn lab that resulted in 75 purple kernels and 75 yellow kernels is likely a monohybrid cross, with one parent being homozygous dominant (PP) and the other parent being heterozygous dominant (Pp).
Step-by-step explanation:
In the corn lab, the genotype of the parents that resulted in 75 purple kernels and 75 yellow kernels is likely a monohybrid cross. This means that one parent had the genotype PP (homozygous dominant) and the other parent had the genotype Pp (heterozygous dominant).