Which of the following is a key difference between the bacterial promoters and eukaryotic promoters transcribed by RNA polymerase II?

• A. Bacterial promoters lack a TATA box, whereas eukaryotic promoters contain one.
• B. Eukaryotic promoters contain a Pribnow box, whereas bacterial promoters lack one.
• C. Bacterial promoters are composed of introns and exons, whereas eukaryotic promoters are not.
• D. Eukaryotic promoters contain a -35 box, whereas bacterial promoters do not.

Answer: (A)