Before revision:  The model suggests that the binding of additional dsDNA base pairs to the DNA/RecA filament alters the tension in the dsDNA that was already bound to the filament . Such coupled tension changes may explain several previously unexplained experimental results.
After revision:  The model suggests that the binding of additional dsDNA base pairs to the DNA/RecA filament alters the tension in the dsDNA that was already bound to the filament , resulting in a non-linear increase in the mechanical energy as a function of the number of bound base pairs. This collective mechanical response may promote homology stringency and underlie unexplained experimental results.