RNA primers are synthesized by PRIMOSOME, specifically, dnaG or primase enzyme… the RNA primer came from dnaG plus dna B interactions….so I guess your question should be put in another way… the RNA primer is the product, yet the PRIMOSOME is the one that decides where primers are synthesized..
link for more info (copy and paste into your browser, I cant post links yet!) :
so…how does PRIMOSOME knows where and when to synthesize the primers?
it seems fr the abstract above (cant access full article), there are —replication factors— that determine RNA primer length and overall kinetics of primer synthesis… so the whole thing may have yet been completely discovered…possibly
so, the current answer would be .. i guess.. the location of RNA primers is determined by primosome 🙂
RNA Primer – Short stretches of ribonucleotides (RNA substrates) found on the lagging strand during DNA replication. Helps initiate lagging strand replication and are later removed.
Dip Jyoti Chakraborty