NEST2012BiologyMolecular Basis of Inheritance
An operon comprises of regulatory DNA sequences such as activator and repressor binding sites near the promoter and controls the transcription of structural genes as a single mRNA. Lac operon is a classical example of gene regulation related to the primary utilization of carbon source for energy in the gut bacterium, Escherichia coli. The transcription of structural genes is governed by availability of different conc
Options
- ARepressor binds to the RNA polymerase.
- BcAMP level will be low in the absence of glucose.
- CLac operon works on the principle of negative regulation.
- DIf glucose is absent and lactose is present, high levels of lac mRNA will be synthesized.
Correct answer
D. If glucose is absent and lactose is present, high levels of lac mRNA will be synthesized.
Step-by-step solution
No solution available.