( ( In ( ( ( stage one ) , ) Interphase ) ) ( , ( ( the chromosomes ) ( ( ( ( duplicate , ) or ) ( make ( a copy ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (NN stage) (CD one)) (, ,) (NP (NNP Interphase)))) (, ,) (NP (DT the) (NNS chromosomes)) (VP (VP (VBZ duplicate)) (, ,) (CC or) (VP (VBP make) (NP (DT a) (NN copy)))) (. .)))
In stage one, Interphase, the chromosomes duplicate, or make a copy.
(ROOT (S (NP (DT The) (NNS chromosomes)) (VP (VB duplicate) (PP (IN in) (NP (DT the) (JJ interphase) (NN phase)))) (. .)))