sentences:  In other words, as you synthesize longer sequences, the number of error-containing clones increases due to the inherent error rates of current technologies.Although recombinant DNA technology is more commonly used in the construction of fusion proteins and plasmids, several techniques with larger capacities have emerged, allowing for the construction of entire genomes.Polymerase cycling assembly (PCA) uses a series of oligonucleotides (or oligos), approximately 40 to 60 nucleotides long, that altogether constitute both strands of the DNA being synthesized.