( That ( ( is ( ( the term ) ( for ( ( the ( two sets ) ) ( of ( ( ( ( ( ( 23 ( giant ( DNA molecules ) ) ) , ) or ) chromosomes ) , ) ( in ( ( the nucleus ) ( of ( every ( human cell ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT That)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (CD two) (NNS sets)) (PP (IN of) (NP (NP (NP (CD 23) (JJ giant) (NN DNA) (NNS molecules)) (, ,) (CC or) (NP (NNS chromosomes)) (, ,)) (PP (IN in) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (DT every) (JJ human) (NN cell))))))))))) (. .)))
That is the term for the two sets of 23 giant DNA molecules, or chromosomes, in the nucleus of every human cell.
(ROOT (S (SBAR (IN If) (S (NP (NP (DT the) (NN dna)) (PP (IN from) (NP (NP (DT all) (CD 46) (NNS chromosomes)) (PP (IN in) (NP (DT a) (JJ human) (NN cell) (NN nucleus)))))) (VP (VBD was) (VP (VBN laid) (PRT (RP out)) (NP (NN end)) (S (VP (TO to) (VP (VB end)))))))) (, ,) (NP (PRP it)) (VP (MD would) (VP (VB measure) (ADVP (NP (QP (RB approximately) (CD two)) (NNS meters)) (RB long)))) (. .)))
If the dna from all 46 chromosomes in a human cell nucleus was laid out end to end, it would measure approximately two meters long.