( ( ( The fusion ) ( of ( the ( two cells ) ) ) ) ( ( creates ( ( a zygote ) ( -LRB- ( ( a ( diploid ( cell ( which ( contains ( ( the ( full number ) ) ( of ( chromosomes ( ( an organism ) needs ) ) ) ) ) ) ) ) ) -RRB- ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN fusion)) (PP (IN of) (NP (DT the) (CD two) (NNS cells)))) (VP (VBZ creates) (NP (NP (DT a) (NN zygote)) (PRN (-LRB- -LRB-) (NP (DT a) (JJ diploid) (NN cell) (SBAR (WHNP (WDT which)) (S (VP (VBZ contains) (NP (NP (DT the) (JJ full) (NN number)) (PP (IN of) (NP (NP (NNS chromosomes)) (SBAR (S (NP (DT an) (NN organism)) (VP (VBZ needs))))))))))) (-RRB- -RRB-)))) (. .)))
The fusion of the two cells creates a zygote (a diploid cell which contains the full number of chromosomes an organism needs).
(ROOT (S (NP (DT A) (JJ diploid) (NN cell)) (VP (VBZ is) (NP (NP (DT a) (NN cell)) (PP (IN with) (NP (CD two) (NNS chromosomes))))) (. .)))