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Biology
Genetics
Biochemistry

Why RNA-primer only initiates replication?

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October 26, 2010 7:14PM

Laxu's answer made no sense so I deleted it. Next time Laxu please contribute something that makes some grain of sense.

Only RNA primers can be used because DNA polymerase cannot add nucleotides without an existing 3-OH' to build on. RNA can be added to an existing template without this requirement and is then used by the DNA polymerase to initiate the strand.