( ( Cells ( in ( G2 ( of Interphase ) ) ) ) ( ( have ( ( duplicated chromosomes ) ( because ( they ( ( have just ) ( been ( through ( ( the ( S phase ) ) ( of ( the ( cell cycle ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Cells)) (PP (IN in) (NP (NP (NN G2)) (PP (IN of) (NP (NNP Interphase)))))) (VP (VBP have) (VP (VBN duplicated) (NP (NNS chromosomes)) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP have) (ADVP (RB just)) (VP (VBN been) (PP (IN through) (NP (NP (DT the) (NNP S) (NN phase)) (PP (IN of) (NP (DT the) (NN cell) (NN cycle))))))))))) (. .)))
Cells in G2 of Interphase have duplicated chromosomes because they have just been through the S phase of the cell cycle.
(ROOT (S (NP (DT The) (NNS chromosomes)) (VP (VB duplicate) (PP (IN in) (NP (DT the) (JJ interphase) (NN phase)))) (. .)))