( ( ( ( ( In humans ) ( this ( means ( that ( ( ( sperm and ) ova ) ( contain ( ( 23 chromosomes ) ( -LRB- ( ( the ( haploid number ) ) -RRB- ) ) ) ) ) ) ) ) ) but ) ( ( somatic cells ) ( contain ( ( 46 chromosomes ) ( -LRB- ( ( the ( diploid number ) ) -RRB- ) ) ) ) ) ) . )
(ROOT (S (S (PP (IN In) (NP (NNS humans))) (NP (DT this)) (VP (VBZ means) (SBAR (IN that) (S (NP (NN sperm) (CC and) (NN ova)) (VP (VBP contain) (NP (NP (CD 23) (NNS chromosomes)) (PRN (-LRB- -LRB-) (NP (DT the) (JJ haploid) (NN number)) (-RRB- -RRB-)))))))) (CC but) (S (NP (JJ somatic) (NNS cells)) (VP (VBP contain) (NP (NP (CD 46) (NNS chromosomes)) (PRN (-LRB- -LRB-) (NP (DT the) (JJ diploid) (NN number)) (-RRB- -RRB-))))) (. .)))
In humans this means that sperm and ova contain 23 chromosomes (the haploid number) but somatic cells contain 46 chromosomes (the diploid number).
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD 46) (NNS chromosomes) (NNS chromosomes)) (PP (IN in) (NP (DT a) (JJ diploid) (JJ human) (NN cell))))) (. .)))