( ( ( ( ( ( Stable ( cyclin B ) ) ( ( ( ( allows ( the ( transition ( to anaphase ) ) ) ) , ) but ) ( anaphase ( ( A ( chromosome movements ) ) ( are slowed ) ) ) ) ) ( , ( ( ( anaphase ( B ( spindle elongation ) ) ) ( ( does not ) occur ) ) , ) ) ) and ) ( ( the ( monooriented ( disjoined chromosomes ) ) ) ( begin ( to ( oscillate ( between ( the ( spindle poles ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNP Stable) (NNP cyclin) (NNP B)) (VP (VP (VBZ allows) (NP (DT the) (NN transition) (S (VP (TO to) (VP (VB anaphase)))))) (, ,) (CC but) (VP (VBD anaphase) (SBAR (S (NP (DT A) (NN chromosome) (NNS movements)) (VP (VBP are) (VP (VBN slowed)))))))) (PRN (, ,) (S (NP (JJ anaphase) (NNP B) (NN spindle) (NNS elongation)) (VP (VBZ does) (RB not) (VP (VB occur)))) (, ,)) (CC and) (S (NP (DT the) (JJ monooriented) (JJ disjoined) (NNS chromosomes)) (VP (VBP begin) (S (VP (TO to) (VP (VB oscillate) (PP (IN between) (NP (DT the) (JJ spindle) (NNS poles)))))))) (. .)))
Stable cyclin B allows the transition to anaphase, but anaphase A chromosome movements are slowed, anaphase B spindle elongation does not occur, and the monooriented disjoined chromosomes begin to oscillate between the spindle poles.
(ROOT (S (NP (JJ Spindle) (NNS fibers)) (VP (VBP pull) (NP (VBN linked) (NNS chromosomes)) (PP (ADVP (RB apart)) (IN in) (NP (JJ anaphase) (NN i.))))))