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Why are primers needed for DNA replication?
A.The primers help with the proofreading function of DNA polymerase.
B.A tiny amount of RNA is needed to tell the cell where genes are located.
C.DNA polymerase can only add nucleotides to an existing chain.
D.They help direct the placement of the telomeres.
E.They help with the joining of Okazaki fragments.

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Answer: Why are primers needed for DNA replication:

C. DNA polymerase can only add nucleotides to an existing chain.

Explanation: The primer serves a prime or lays a foundation for DNA to be synthesized. DNA polymerase can only add nucleotides to an existing chain which the primer would lay.

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