The following table shows several bacterial strain lac operon genotypes (some are partial diploids).
a) Fill in the blanks in the lactose absent and lactose present columns in this table. (+) means significant levels of active ß-galactosidase enzyme can be detected. () means no significant levels of active ß-galactosidase enzyme. The first line is filled in for reference. Strain genotype Lactose absent Lactose present
b) If lactose is absent and glucose is present in the culture medium of strain 4, will significant levels of active ß-galactosidase enzyme be detected? Explain in brief, just because there is lots of room left, you dont need to fill it.
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