I meant the polymerase starts at the primer, then writes ~100 bp and then can't just read the entire DNA again five times... Like doing a spiral of the circular DNA, reading it over and ovver so you get a much longer linear fragemt from it...
Ahh, I know there are enzymes that 'get the DNA in front out of the way'... a few terms that come to mind (and I feel like I'm forgetting the important one, but maybe not):
processivity, helicase, replication fork, replisome
Here are some links, I only scanned them, but I think they could be useful if not point you to more keywords:
An interaction between DNA polymerase and helicase is essential for the high processivity of the bacteriophage T7 replisome.
Dynamic DNA helicase-DNA polymerase interactions assure processive replication fork movement.
Real-time single-molecule observation of rolling-circle DNA replication
last search terms I used were: 'polymerase helicase processivity rolling circle'
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