Synthesis of -Galactosidase and Permease

Synthesis of -Galactosidase and Permease by Haploids and Partial Diploids with Structural Gene MutationsSynthesis of -Galactosidase and Permease by Haploids and Partial Diploids with Structural Gene Mutations

Table 12.3 Synthesis of B-Galactosidase and Permease by Haploids and Partial Diploids with Structural Gene Mutations Genotype B-Galactosidase" Permeasea Description Lactose No Lactose Lactose No Lactose 1. l+ P+ O+ Z+ Y+ + — + - Wild-type (lac? 2. l+ P+ 0+ 2‘ Y+ - — + — No functional B-galactosidase (lac‘) 3. l+ P+ O+ Z+ Y' + -— -— — No functional permease (lac‘) 4. l+ P+ O+ Z+ Y“/l+ P+ 0+ Z‘ Y“ + -— + —- Wild-type response by complementation (lac+). aSymbols + and - indicate production and no production, respectively, of functional enzymes.