( ( The DNA ) ( ( ( ( takes ( ( the form ) ( of ( a ( double helix ) ) ) ) ) , ) ( each ( of ( ( the ( two strands ) ) ( consisting ( of ( ( a ( long sequence ) ) ( of ( the nucleotides ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN DNA)) (VP (VP (VBZ takes) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (DT a) (JJ double) (NN helix))))) (, ,) (NP (NP (DT each)) (PP (IN of) (NP (NP (DT the) (CD two) (NNS strands)) (VP (VBG consisting) (PP (IN of) (NP (NP (DT a) (JJ long) (NN sequence)) (PP (IN of) (NP (DT the) (NNS nucleotides)))))))))) (. .)))
The DNA takes the form of a double helix, each of the two strands consisting of a long sequence of the nucleotides.
(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)))))) (. .)))