Which of the following is true about transcription?
A)A repressor protein activates transcription of a negatively regulated gene.
B)A positively regulated gene can be transcribed only in the absence of active repressor.
C)In the absence of an activator,a negatively regulated gene is poorly transcribed.
D)The initiation of transcription of regulated genes is controlled by regulatory proteins which bind to specific DNA sequences.
E)All of the above.

Question

Quizplus · Accepted Answer

The initiation of transcription of regulated genes is controlled by regulatory proteins which bind to specific DNA sequences. This clearly implies that the transcription of genes is regulated by specific proteins that bind to specific DNA sequences. Option A is incorrect as repressor proteins inhibit gene transcription rather than activate it. Option B is incorrect since positively regulated genes require an activator protein for transcription to occur. Option C is incorrect because a negatively regulated gene transcription can occur in the presence of an activator protein.

Which of the Following Is True About Transcription