Before revision:  Then, base pairing occurs by swapping intrabase entanglements with interbase entanglements  .
After revision:  Then, base pairing occurs by swapping intrabase entanglements with interbase entanglements . We examine possible realizations of quantum circuits to be used to obtain intrabase entanglement and swapping protocols to be employed to obtain interbase entanglement. Finally, we discuss possible ways for computational and experimental verification of the model .