DNA Replication

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.

2.RNA polymerases are capable of initiating a new strand but DNA polymerases cannot.
 
3.DNA has the base thymine while RNA has uracil as its base.

4.DNA is double stranded whereas RNA is a single stranded.

5.DNA contains the pentose sugar deoxyribose while RNA contains the pentose sugar ribose.

6.DNA polymerase will be continuous till the work is finally done wherein RNA polymerases will continue but eventually may break in the event it will reach a “stop” cycle.

7.Subunits contained in RNA polymerases must unwind the templates of DNA and the DNA polymerases do actually abide the helicase that the double helix may be open just in front of it.

8.Lastly, DNA polymerase is a lot faster compared to RNA polymerase.

• DNA polymerase forms a DNA strand from deoxyribonucleoties, whereas RNA polymerase forms RNA strands from ribonucleoties.
• RNA polymerase is capable of fulfilling many more functions compared to what DNA polymerase could do.
• RNA polymerase forms a variety of products but not the DNA polymerase.
• DNA polymerase starts to function from a 3’ end of the DNA strand, while RNA polymerase can start to function at anywhere of the DNA strand from 3’ end to 5’ end direction.