( ( Chemistry ( of ( ( nucleotides , ) ( nucleic acids ) ) ) ) . )
(ROOT (NP (NP (NNP Chemistry)) (PP (IN of) (NP (NP (NNS nucleotides)) (, ,) (NP (JJ nucleic) (NNS acids)))) (. .)))
Chemistry of nucleotides, nucleic acids.
(ROOT (S (NP (JJ Individual) (NNS nucleotides)) (VP (MD can) (VP (VB be) (VP (VBN linked) (ADVP (RB together)) (PP (IN through) (NP (PRP$ their) (JJ phosphate) (NNS groups))) (S (VP (TO to) (VP (VB form) (NP (JJ nucleic) (NN acid) (NNS polymers)))))))) (. .)))