Which of the following correctly describes a difference between RNA & DNA polymerases?
A) RNA polymerases usually do not need a template, while DNA polymerases do.
B) DNA polymerases usually require a primer (i.e., they can only continue a strand, not start one), while most RNA polymerases do not.
C) RNA polymerases usually synthesize introns, while DNA polymerases synthesize cistrons.
D) RNA polymerases polymerize 5' 3', while DNA polymerases polymerize 3' 5'.

Question

Quizplus · Accepted Answer

DNA polymerases require a primer to start synthesis, while most RNA polymerases can initiate synthesis without a primer. This is because RNA polymerases have an inherent ability to recognize a specific promoter sequence on DNA, which triggers the start of transcription. However, RNA polymerases still require a template strand, just like DNA polymerases.

Which of the Following Correctly Describes a Difference Between RNA