how do rna polymerase and dna polymerase differ
SUMMARY: 1.DNA polymerase synthesizes DNA while RNA polymerase synthesizes RNA. 2.In contrast with the DNA polymerase, RNA polymerases do not necessarily require the so called primer to start the process and they actually have no proofreading systems. nucleotide can be added to DNA polymerase only on a pre-existing 3â-OH group which requires a primer so that it may add to the nucleotide. The so called primers do contain DNA and RNA base. DNA has the base thymine while RNA has uracil as its base.