Question

What is positive control in gene expression?

Answer 1

Gene Expression:

1. The process through which the instructions in our DNA are transformed into a functioning product, such as a protein, is known as gene expression.
2. Gene expression is the process by which information stored in our DNA is translated into instructions for producing proteins or other substances.

Positive control of gene expression:

1. When a gene expresses in the presence of an activator or inducer, it is said to be under positive control.
2. If positive regulatory protein is missing, the operon is turned off.
3. For example, lactose or allolactose operate as lac operon inducers.
4. The interaction with inducers inactivates the repressor protein.