( ( ( ( ( ( ( ( ( The fusion ) ( of ( ( ( ( ( the sperm ) ( -LRB- ( ( with ( 23 chromosomes ) ) -RRB- ) ) ) and ) ( the oocyte ) ) ( -LRB- ( ( with ( 23 chromosomes ) ) -RRB- ) ) ) ) ) ( at ( fertilization results ) ) ) ( in ( ( ( ( a ( live ( human being ) ) ) , ) ( a ( single-cell ( human zygote ) ) ) ) , ) ) ) ( with ( ( 46 chromosomes ) ( the number ) ) ) ) ( of ( chromosomes characteristic ) ) ) ( of ( an ( individual member ) ) ) ) ( of ( the ( human species ) ) ) ) . )
(ROOT (NP (NP (DT The) (NN fusion)) (PP (IN of) (NP (NP (DT the) (NN sperm)) (PRN (-LRB- -LRB-) (PP (IN with) (NP (CD 23) (NNS chromosomes))) (-RRB- -RRB-)) (CC and) (NP (DT the) (NN oocyte)) (PRN (-LRB- -LRB-) (PP (IN with) (NP (CD 23) (NNS chromosomes))) (-RRB- -RRB-)))) (PP (IN at) (NP (NN fertilization) (NNS results))) (PP (IN in) (NP (NP (DT a) (JJ live) (JJ human) (NN being)) (, ,) (NP (DT a) (JJ single-cell) (JJ human) (NN zygote)) (, ,))) (PP (IN with) (NP (NP (CD 46) (NNS chromosomes)) (NP (DT the) (NN number)))) (PP (IN of) (NP (NNS chromosomes) (NN characteristic))) (PP (IN of) (NP (DT an) (JJ individual) (NN member))) (PP (IN of) (NP (DT the) (JJ human) (NN species))) (. .)))
The fusion of the sperm (with 23 chromosomes) and the oocyte (with 23 chromosomes) at fertilization results in a live human being, a single-cell human zygote, with 46 chromosomes the number of chromosomes characteristic of an individual member of the human species.
(ROOT (S (PP (IN In) (NP (NNS humans))) (, ,) (NP (DT a) (NN zygote)) (VP (VBZ has) (NP (CD 46) (NNS chromosomes))) (. .)))