( ( If ( ( one ( of ( these nucleotides ) ) ) ( is ( on ( ( one strand ) ( of DNA ) ) ) ) ) ) ( , ( ( the ( complementary nucleotide ) ) ( ( must ( be ( on ( the ( other strand ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (NP (CD one)) (PP (IN of) (NP (DT these) (NNS nucleotides)))) (VP (VBZ is) (PP (IN on) (NP (NP (CD one) (NN strand)) (PP (IN of) (NP (NNP DNA)))))))) (, ,) (NP (DT the) (JJ complementary) (NN nucleotide)) (VP (MD must) (VP (VB be) (PP (IN on) (NP (DT the) (JJ other) (NN strand))))) (. .)))
If one of these nucleotides is on one strand of DNA, the complementary nucleotide must be on the other strand.
(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)))))))