The table below gives the genotypes (with respect to the lac operon) of several partial diploid E. coli strains.

1. The table below gives the genotypes (with respect to the lac operon) of several partial diploid E. coli strains. Fill in the phenotypes, using a “+” for -galactosidase synthesis (lacZ gene) and “–” for no -galactosidase synthesis. Glucose is absent in all cases. Give a brief explanation of your reasoning.Phenotype for -galactosidase productionGenotype