( This ( ( ( stretches ( the DNA ) ) ( so ( that ( ( ( ( ( one or ) more ) bind ) ( to ( ( the nucleotides ) ( on ( the electrode ) ) ) ) ) surfaces ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ stretches) (NP (DT the) (NN DNA)) (SBAR (RB so) (IN that) (S (NP (NP (QP (CD one) (CC or) (JJR more)) (NN bind)) (PP (TO to) (NP (NP (DT the) (NNS nucleotides)) (PP (IN on) (NP (DT the) (NN electrode)))))) (VP (VBZ surfaces))))) (. .)))
This stretches the DNA so that one or more bind to the nucleotides on the electrode surfaces.
(ROOT (S (ADVP (RB Deletions)) (VP (VB remove) (NP (NP (QP (CD one) (CC or) (JJR more)) (NNS nucleotides)) (PP (IN from) (NP (DT the) (NN dna)))))))