( ( All humans ) ( ( have ( ( either ( 46 ( or ( 48 chromosomes ) ) ) ) ( in ( ( the nucleus ) ( of ( our cells ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT All) (NNS humans)) (VP (VBP have) (NP (NP (DT either) (CD 46) (CC or) (CD 48) (NNS chromosomes)) (PP (IN in) (NP (NP (DT the) (NN nucleus)) (PP (IN of) (NP (PRP$ our) (NNS cells))))))) (. .)))
All humans have either 46 or 48 chromosomes in the nucleus of our cells.
(ROOT (S (NP (NP (DT The) (NNS cells)) (PP (IN of) (NP (DT all) (NNS protists)))) (VP (VBP have) (NP (DT a) (NN nucleus))) (. .)))