Sigma (σ)factors can regulate the initiation of transcription.Which of the following is not an example of σ regulation?
A)Some σ factors recognize promoters for genes whose products are necessary when the organism is under stress, such as heat shock.
B)Some σ factors recognize genes necessary for nitrogen utilization.
C)Bacteriophages may code for specific σ factors that bind the core RNA polymerase and result in recognition of viral promoters.
D)There are many σ sigma factors associated with eukaryotic organisms.

Question

Quizplus · Accepted Answer

The statement about sigma factors associated with eukaryotic organisms is not an example of sigma regulation. This is because sigma factors are primarily associated with prokaryotic organisms, and although eukaryotic organisms do have transcription factors with similar functions, they are not typically referred to as sigma factors.

Sigma (σ)Factors Can Regulate the Initiation of Transcription