Q. Assertion: In eukaryotes, gene expression is regulated at transcriptional level only. Reason: The regulatory proteins in prokaryotes always act as activators.
A) Both assertion and reason are true and reason is the correct explanation of assertion.
B) Both assertion and reason are true but reason is not correct explanation of assertion.
C) Assertion is true, but reason is false.
D) Both assertion and reason are false.
Explanation
In eukaryotes, gene expression is regulated at various levels, for example, transcription, translation, splicing, etc., whereas in prokaryotes, gene expression is predominantly controlled during transcriptional initiation. The regulatory proteins in prokaryotes can act both positively (activator) and negatively (repressors).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.