DNA Replication

Q1: The synthesis of DNA by DNA polymerase occurs in the

A 3' to 5' direction

B 5' to 5' direction

C 5' to 3' direction

D 3' to 3' direction

ANS:C - 5' to 3' direction

This is because the DNA polymerase can add a nucleotide to the chain to the 3rd carbon of deoxyribose sugar. The nucleotide added to the strand in the polymerization is in the form of deoxynucleotide triphosphate.

This bond that is made between deoxyribose sugar and the nucleotide triphosphate is known as a phosphodiester bond.



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