( ( ( ( DNA , ) ( ( a ( nucleic acid ) ) ( that ( carries ( ( the ( genetic information ) ) ( determining ( individual ( hereditary characteristics ) ) ) ) ) ) ) ) , ) ( ( ( ( ( consists ( of ( ( two ( long chains ) ) ( of ( nucleotides ( twisted ( into ( a ( double helix ) ) ) ) ) ) ) ) ) , ) and ) ( is ( ( the ( major constituent ) ) ( of chromosomes ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP DNA)) (, ,) (NP (NP (DT a) (JJ nucleic) (NN acid)) (SBAR (WHNP (WDT that)) (S (VP (VBZ carries) (NP (NP (DT the) (JJ genetic) (NN information)) (VP (VBG determining) (NP (JJ individual) (JJ hereditary) (NNS characteristics)))))))) (, ,)) (VP (VP (VBZ consists) (PP (IN of) (NP (NP (CD two) (JJ long) (NNS chains)) (PP (IN of) (NP (NP (NNS nucleotides)) (VP (VBN twisted) (PP (IN into) (NP (DT a) (JJ double) (NN helix))))))))) (, ,) (CC and) (VP (VBZ is) (NP (NP (DT the) (JJ major) (NN constituent)) (PP (IN of) (NP (NNS chromosomes)))))) (. .)))
DNA, a nucleic acid that carries the genetic information determining individual hereditary characteristics, consists of two long chains of nucleotides twisted into a double helix, and is the major constituent of chromosomes.
(ROOT (S (NP (NNP Dna)) (VP (VBZ consists) (PP (IN of) (NP (NP (CD two) (JJ long) (NNS chains)) (PP (IN of) (NP (NNS nucleotides)))))) (. .)))