( ( ( ( ( In summary ) ( , ( ( ( ( two n ) or ) ( haploid nuclei ) ) ( combine ( to ( produce ( ( a ( 2n diploid ) ) ( which ( ( grows ( from ( one cell ) ) ) ( to ( many ( with mitosis ) ) ) ) ) ) ) ) ) ) ) ) ; ) ( ( the ( 2n ( diploid cell ) ) ) ( reduces ( to ( ( four n ) ( ( ( haploid cells ) ( by meiosis ) ) ( to ( complete ( the cycle ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (PP (IN In) (NP (NN summary))) (, ,) (NP (NP (CD two) (NN n)) (CC or) (NP (JJ haploid) (NNS nuclei))) (VP (VBP combine) (S (VP (TO to) (VP (VB produce) (NP (NP (DT a) (JJ 2n) (NN diploid)) (SBAR (WHNP (WDT which)) (S (VP (VBZ grows) (PP (IN from) (NP (CD one) (NN cell))) (PP (TO to) (NP (NP (JJ many)) (PP (IN with) (NP (NNS mitosis)))))))))))))) (: ;) (S (NP (DT the) (JJ 2n) (JJ diploid) (NN cell)) (VP (VBZ reduces) (PP (TO to) (NP (NP (CD four) (NN n)) (VP (VBN haploid) (NP (NNS cells)) (PP (IN by) (NP (NNS meiosis))) (S (VP (TO to) (VP (VB complete) (NP (DT the) (NN cycle)))))))))) (. .)))
In summary, two n or haploid nuclei combine to produce a 2n diploid which grows from one cell to many with mitosis; the 2n diploid cell reduces to four n haploid cells by meiosis to complete the cycle.
(ROOT (S (NP (NNS Cells)) (VP (VBP have) (NP (CD four) (NNS cycles))) (. .)))