( ( ( ANAPHASE -- ) ( ( ( The microtubules ) ( from ( the centrosomes ) ) ) ( ( ( pull ( on ( ( the centromere ) ( of ( each chromosome ) ) ) ) ) and ) ( ( pulls ( the ( sister chromatids ) ) ) apart ) ) ) ) . )
(ROOT (NP (NP (NNP ANAPHASE)) (: --) (S (NP (NP (DT The) (NNS microtubules)) (PP (IN from) (NP (DT the) (NNS centrosomes)))) (VP (VP (VBP pull) (PP (IN on) (NP (NP (DT the) (NN centromere)) (PP (IN of) (NP (DT each) (NN chromosome)))))) (CC and) (VP (VBZ pulls) (NP (DT the) (NN sister) (NNS chromatids)) (ADVP (RB apart))))) (. .)))
ANAPHASE-- The microtubules from the centrosomes pull on the centromere of each chromosome and pulls the sister chromatids apart .
(ROOT (S (PP (IN During) (NP (DT the) (JJ anaphase) (NN phase))) (, ,) (S (NP (NN sister) (NNS chromatids)) (VP (VBP separate))) (CC and) (S (NP (DT the) (NNS centromeres)) (VP (VBP divide))) (. .)))