A Polymerase Chain Reaction (PCR) is a method of amplification which enables one to produce many copies of a certain DNA/RNA strand for many applications (as described in the link above).
I have never seen the actual process and the resulting PCR solution, but according to Wikipedia, the volume of the solution is of the micro- to milliliter magnitude.
I was wondering: if this process were allowed to continue on and on, while supplying all necessary nucleotides and other materials, to the magnitude of, say, liters - could we end up with a tangible mass of DNA/RNA?
In other words, will we be able to extract from the solution a solid mass of DNA/RNA that is visible to the naked eye? If yes, can we predict the physical characteristics of such mass?